{"title":"Stand Up Blocks","description":"\u003cp\u003eStand-up blocks designed for stable \u0026amp; efficient sail control and rigging. \u003ca href=\"#seo-description\"\u003eClick here to read more.\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"ronrf2454","title":"Ronstan Stand-up Base, S40 BB \u0026 RT Orbit Blocks","description":"\u003cp\u003eStan D -up kits feature a clatter-free rubber boot. You can attach the Dyneema so that the block is aligned with the stan D -up base or across it. It's a neat, low-profile solution which allows full articulation.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF2454 | Ronstan Part # RF2454\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347560636722,"sku":"RONRF2454","price":17.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF2454.jpg?v=1735835717"},{"product_id":"ron-rf15141","title":"Ronstan Series 15 BB Block, Stand-Up Loop Top","description":"\u003cp\u003eRonstan's Ball Bearing 15mm, conceived and engineered for the demands of competitive sailing in skiff, Olympic and sports boats classes, have rapidly become the international choice for high performance hardware.\u003c\/p\u003e\u003cp\u003eOur Part # RON-RF15141 | Ronstan Part # RF15141\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347561947442,"sku":"RON-RF15141","price":20.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RON-RF15141.jpg?v=1728040377"},{"product_id":"ronrf2455","title":"Ronstan Stand-up Base, S55 BB \u0026 RT Orbit Blocks","description":"\u003cp\u003eThe RF2455 stan D -up kit features a clatter-free rubber boot. You can attach the Dyneema link so that the block is aligned with the stan D -up base or across it. It's a neat, low-profile solution which allows full articulation.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF2455 | Ronstan Part # RF2455\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347573678386,"sku":"RONRF2455","price":19.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF2455.jpg?v=1728023238"},{"product_id":"ronrf20141","title":"Ronstan Series 20 BB Block, Stand-Up Loop Top","description":"\u003cp\u003ePrecision moulded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance \u0026amp; low friction.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF20141 | Ronstan Part # RF20141\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347575087410,"sku":"RONRF20141","price":22.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF20141.jpg?v=1735835417"},{"product_id":"ron-rf15171","title":"Ronstan Series 15 BB Block, Upright Lead","description":"\u003cul\u003e\n\u003cli\u003eSmallest and lightest ball bearing block available.\u003c\/li\u003e\n\u003cli\u003ePrecision moulded acetal sheave running on stainless steel ball bearings provide high performance \u0026amp; low friction.\u003c\/li\u003e\n\u003cli\u003eSingle loop head blocks include an O-ring to separate running line from head lashing or fixing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e Our Part # RON-RF15171 | Ronstan Part # RF15171\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347575120178,"sku":"RON-RF15171","price":22.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RON-RF15171.jpg?v=1728038315"},{"product_id":"ronrf20171","title":"Ronstan Series 20 BB Block, Upright Lead","description":"\u003cul\u003e\n\u003cli\u003eTypically used for halyards at the mast base.\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel load strap and head fitting\u003c\/li\u003e\n\u003cli\u003eUV stabilised Acetal sheave\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel load housing \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e Our Part # RONRF20171 | Ronstan Part # RF20171\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347584590130,"sku":"RONRF20171","price":24.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF20171.jpg?v=1735835615"},{"product_id":"sel40310112r","title":"Selden 30 Ball Bearing Block - Single Swivel Stand Up","description":"\u003cp data-start=\"92\" data-end=\"655\"\u003eThe Selden 30 Ball Bearing Block - Single Swivel Stand Up (403-101-12R) is a 30mm ball bearing block designed for medium-sized boats or trim lines. It features stainless steel ball bearings for strength under dynamic loads and a glass fiber reinforced composite construction for durability. Acetal bearing cages reduce friction and weight for smooth rotation. Easy to install on deck with included hardware. Ideal for moderate and dynamic loads with low friction. Perfect for high-performance rigs and demanding sailing conditions.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40310112R | \u003cspan\u003eMfr. Part\u003c\/span\u003e # 403-101-12R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347609493810,"sku":"SEL40310112R","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40310112R.jpg?v=1728063231"},{"product_id":"ron-rf30141","title":"Ronstan Series 30 BB Block, Stand Up Loop Top","description":"\u003cp\u003eSheaves running on Acetal or Torlon ball bearings provide high performance \u0026amp; low friction. The 2-stage ball bearing system provides consistent performance over the full load range.\u003c\/p\u003e\u003cp\u003eOur Part # RON-RF30141 | Ronstan Part # RF30141\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347613622578,"sku":"RON-RF30141","price":28.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RON-RF30141.jpg?v=1728023812"},{"product_id":"ronrf35141","title":"Ronstan Series 30 BB Orbit Block, Stand Up, Fixed Head","description":"\u003cp\u003eBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.\u003c\/p\u003e\u003cp\u003eMainsheet systems and spinnaker sheets on dinghies to 5 m (16 ft), halyard, vang and backstay applications on boats to 5 m (16 ft), control line applications on larger yachts.  Our Part # RONRF35141 | Ronstan Part # RF35141\u003c\/p\u003e\u003cp\u003eMainsheet systems and spinnaker sheets on dinghies to 5 m (16 ft), halyard, vang and backstay applications on boats to 5 m (16 ft), control line applications on larger yachts.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF35141 | Ronstan Part # RF35141\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347621421362,"sku":"RONRF35141","price":28.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF35141.jpg?v=1735835425"},{"product_id":"ronrf35140","title":"Ronstan Series 30 BB Orbit Block, Stand Up, Swivel","description":"\u003cp\u003eBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.\u003c\/p\u003e\u003cp\u003eMainsheet systems and spinnaker sheets on dinghies to 5 m (16 ft), halyard, vang and backstay applications on boats to 5 m (16 ft), control line applications on larger yachts.  Our Part # RONRF35140 | Ronstan Part # RF35140\u003c\/p\u003e\u003cp\u003eMainsheet systems and spinnaker sheets on dinghies to 5 m (16 ft), halyard, vang and backstay applications on boats to 5 m (16 ft), control line applications on larger yachts.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF35140 | Ronstan Part # RF35140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347630956850,"sku":"RONRF35140","price":31.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF35140.jpg?v=1735835425"},{"product_id":"ronrf30171","title":"Ronstan Series 30 BB Block, Upright Lead","description":"\u003cp\u003eLead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.Precision moulded Acetal sheaves running on Acetal or Torlon ball bearings provide high performance \u0026amp; low friction. The 2-stage ball bearing system provides consistent performance over the full load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF30171 | Ronstan Part # RF30171\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347638788402,"sku":"RONRF30171","price":32.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF30171.jpg?v=1735835583"},{"product_id":"ronrf41140","title":"Ronstan Series 40 AP Block, Single Stand Up","description":"\u003cp\u003eThe Ronstan Series 40 AP Block, Single Stand Up #RF41140 is a versatile piece of sailing gear that's perfect for managing halyards and control lines. Its design combines self-lubricating Acetal sheaves and polished stainless steel races, making it ideal for handling both dynamic and static loads. Whether you're cruising or racing, this block is built for reliability and longevity.\u003c\/p\u003e\u003cp\u003eConstructed with durable materials, this block features Acetal polymer sheaves that ensure smooth operation, and stainless steel races for enhanced performance under load. The universal head can be locked in two directions or left to swivel freely, offering maximum flexibility. Designed for sailors, this block is a reliable choice for various applications, supporting both dynamic and high static loads.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF41140 | Mfr. Part #RF41140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347658219826,"sku":"RONRF41140","price":36.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF41140.jpg?v=1735835423"},{"product_id":"ant00316","title":"Antal Mini Block 34x6 Series - Stand-Up","description":"\u003cp\u003eVertical fix, sheave 34. SWL 400 kg.\u003c\/p\u003e\u003cp\u003eOur Part # ANT00316 | Antal Part # 316\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49347683582258,"sku":"ANT00316","price":71.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00316.png?v=1728021129"},{"product_id":"sel40210115","title":"Selden Block BBB20 Double Stand Up","description":"\u003cp data-start=\"0\" data-end=\"282\"\u003eThe Selden BBB20 Double Stand Up Block (402-101-15) is a 20 mm ball bearing block for control lines on dinghies and keelboats. Made of stainless steel and glass fiber reinforced polyamide, it is strong and lightweight, with a deck-mounted bracket and spring for easy installation.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"331\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eOur Part # SEL40210115 | Mfr. Part # 402-101-15\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347723493682,"sku":"SEL40210115","price":42.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40210115.jpg?v=1735914106"},{"product_id":"ron-rf40140","title":"Ronstan Series 40 BB Block, Single Stand Up","description":"\u003cp\u003eSheaves running on Acetal or Torlon ® ball bearings provide high performance \u0026amp; low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock's universal head can be fixed in either of two planes, or free to swivel as required\u003c\/p\u003e\u003cp\u003eOur Part # RON-RF40140 | Ronstan Part # RF40140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347724312882,"sku":"RON-RF40140","price":44.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RON-RF40140.jpg?v=1728043248"},{"product_id":"ant00517","title":"Antal OPF Series 50 mm Up-Down","description":"\u003cp\u003eVertical fix, sheave 50, SWL 600 kg.\u003c\/p\u003e\u003cp\u003eOur Part # ANT00517 | Antal Part # 517\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49347748954418,"sku":"ANT00517","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00517.jpg?v=1736185709"},{"product_id":"ronrf45140","title":"Ronstan Series 40 BB Orbit Block, Single, Stand-Up Swivel Head","description":"\u003cp\u003eThe Ronstan Series 40 BB Orbit Block, Single, Stand-Up Swivel Head #RF45140 is a game-changer for sailors seeking lightweight and efficient performance. With its innovative design that keeps weight to a minimum without sacrificing strength, it's perfect for various sailing applications. This block is engineered to offer maximum load capacity with minimal friction, making it an ideal choice for enthusiasts and professionals alike.\u003c\/p\u003e\u003cp\u003eCrafted using advanced materials, this orbit block features high compression strength carbon black Acetal ball bearings and a glass fiber reinforced, MoS2 impregnated nylon stage 2 bearing. The frame and cheeks are made from toughened, glass fiber reinforced nylon, while the sheave incorporates carbon fiber reinforced, PTFE impregnated nylon. It is tailored for mainsheet systems and spinnaker sheets on dinghies, sportsboats, and small keelboats up to 5 meters, as well as halyard, vang, and backstay applications on boats up to 8 meters.\u003c\/p\u003e\u003cp\u003eUsage\u003c\/p\u003e\u003cp\u003eIdeal for mainsheet systems on spinnaker sheets for dinghies to 5m, this versatile block is also suited for spinnaker sheets on sportsboats and small keelboats. It’s perfect for halyard, vang, and backstay applications on larger boats, ensuring reliability and performance.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF45140 | Mfr. Part #RF45140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347755901234,"sku":"RONRF45140","price":53.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF45140.jpg?v=1735835534"},{"product_id":"ronrf51140","title":"Ronstan Series 50 AP Block, Single Stand Up","description":"\u003cp\u003eAll purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Captive Lock's universal head can be fixed in either of two planes, or free to swivel as required. Quick adjusting cleat arms require no tools to adjust and fix securely in position.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF51140 | Ronstan Part # RF51140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347760423218,"sku":"RONRF51140","price":50.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF51140.jpg?v=1735835428"},{"product_id":"ronrf48140","title":"Ronstan S40 BB Orbit Block,Single,Stand-Up","description":"\u003cp\u003eThe new Series 40 ball bearing Orbit Blocks provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fibre reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability. As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans. Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimise friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eOur Part # RONRF48140| Ronstan Part # RF48140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347819602226,"sku":"RONRF48140","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF48140.jpg?v=1728061888"},{"product_id":"ant00513","title":"Antal OPF Series 50 mm Block U-Bolt","description":"\u003cp\u003eOPF series, block on U bolt, sheave 50, SWL 600 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003eOur Part # ANT00513 | Antal Part # 513\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49347898835250,"sku":"ANT00513","price":144.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00513.png?v=1728057068"},{"product_id":"ronrf55171","title":"Ronstan Series 55 BB Orbit Block, Upright Lead","description":"\u003cp\u003eThe Ronstan Series 55 BB Orbit Block, Upright Lead #RF55171 is your go-to for efficient and lightweight sailing performance. It's designed with a unique orbital ball-bearing system, making it perfect for those who need reliable lead blocks. Even though it's built to handle heavy loads, it remains incredibly light and easy to use.\u003c\/p\u003e\u003cp\u003eConstructed from high-quality materials, including a toughened, glass fibre reinforced Nylon frame and cheeks, and a carbon fibre reinforced, PTFE impregnated Nylon sheave, this block is made for durability and performance. The head fitting is crafted from Grade 316 stainless steel, ensuring longevity. This block is ideal for use in mainsheet systems and spinnaker sheets on dinghies, sportsboats, and small keelboats up to 9m.\u003c\/p\u003e\u003cp\u003eUsage\u003c\/p\u003e\u003cp\u003ePerfect for mainsheet and spinnaker sheet systems on dinghies, sportsboats, and small keelboats to 9m. It’s also suitable for halyard, vang, and backstay applications on boats up to 8m, as well as control line applications on larger yachts.\u003c\/p\u003e\u003cp\u003eOur Part #RONRF55171 | Mfr. Part #RF55171\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49347912761650,"sku":"RONRF55171","price":64.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF55171.jpg?v=1735835590"},{"product_id":"lew29901320bk","title":"Lewmar 30mm Control Block - Single Stand Up","description":"\u003cp\u003eThe Lewmar 30mm Control Block - Single Stand Up is ideally for use with hand-held loads. Lewmar Control Blocks feature lightweight, performance load-bearing capacity. MRT (Metal Replacement Technology) and a stainless steel central race and balls provide a weight advantage, while Long Fibre Technology offers exceptional strength and durability. The open design allows sand and salt to be flushed out easily, keeping maintenance simple.\u003c\/p\u003e\u003cp\u003eOur Part # LEW29901320BK | Lewmar Part # 29901320BK\u003c\/p\u003e","brand":"Lewmar","offers":[{"title":"Default Title","offer_id":49347923280178,"sku":"LEW29901320BK","price":21.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/LEW29901320BK.jpg?v=1728034071"},{"product_id":"ant00617","title":"Antal OPF Series 60 mm Up-Down Block","description":"\u003cp\u003eVertical fix, sheave 60, SWL 800 kg.\u003c\/p\u003e\u003cp\u003eOur Part # ANT00617 | Antal Part # 617\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49347926262066,"sku":"ANT00617","price":146.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00617.png?v=1728023507"},{"product_id":"ant00717","title":"Antal OPF Series 70 mm Up-Down Block","description":"\u003cp\u003eVertical fix, sheave 70, SWL 1300 kg.\u003c\/p\u003e\u003cp\u003eOur Part # ANT00717 | Antal Part # 717\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348015522098,"sku":"ANT00717","price":187.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00717.png?v=1728058840"},{"product_id":"sch50462","title":"Schaefer Stand Up Swivel Block 2 in (51mm) sheave\/ Aluminum","description":"\u003cp\u003eSchaefer Block #504-62 is excellent for halyard and sheet control. Rotates 360°, absorbs multi-angle loads. Large diameter base distributes pressure to reduce deck wear. Ideal for cruising and coastal sailing.\u003c\/p\u003e\u003cp\u003eOur Part # SCH50462| Schaefer Part # 504-62\u003c\/p\u003e","brand":"Schaefer","offers":[{"title":"Default Title","offer_id":49348060840242,"sku":"SCH50462","price":210.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SCH50462.jpg?v=1728018119"},{"product_id":"lew29901420bk","title":"Lewmar 40mm Control Block - Single Stand Up","description":"\u003cp\u003eThe Lewmar 40mm Control Block - Single Stand Up #29901420BK is perfect for handling loads by hand while offering impressive strength and durability. Featuring lightweight construction with Metal Replacement Technology and a stainless steel central race, this stand up block excels in performance and reliability. Its open design ensures easy maintenance, making it a sailor's go-to choice.\u003c\/p\u003e\u003cp\u003eCrafted with Long Fibre Technology, this control block is made to last in harsh marine environments. It includes a stainless steel central race and balls, providing excellent load-bearing capacity without unnecessary weight. Ideal for hand-held sailing tasks, it's compatible with various ropes and rigging setups.\u003c\/p\u003e\u003cp\u003eOur Part #LEW29901420BK | Mfr. Part #29901420BK\u003c\/p\u003e","brand":"Lewmar","offers":[{"title":"Default Title","offer_id":49348076798258,"sku":"LEW29901420BK","price":37.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/LEW29901420BK.jpg?v=1728032367"},{"product_id":"ant00614","title":"Antal OPF Series 60 mm Block on Pad-Eye","description":"\u003cp\u003eOPF series, block on pad-eye, sheave 60, SWL 800 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT00614 | Antal Part # 614\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348157571378,"sku":"ANT00614","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00614.png?v=1728056764"},{"product_id":"ronrf104140","title":"Ronstan Series 100 Core Block, Stand-up Block, swiveling","description":"\u003cp\u003eA balanced design approach incorporating functionality, performance and style makes the Series 100 Core Blocks™ the right choice for performance cruising or racing applications. A full contact bearing provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Glass Fibre reinforced nylon sheave, alloy cheeks and stainless fixing complete the durable package.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDynamic and high static load performance\u003c\/b\u003e\u003cbr\u003e\nCore Blocks™ incorporate a full contact acetal bearing on a polished stainless steel race to maintain low friction performance under heavy loads. Ball bearings are configured to act as a thrust bearing between the sheave and checks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect; particularly important for foot blocks.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUniversal head\u003c\/b\u003e\u003cbr\u003e\nThe head assembly incorporates a brass bearing washer to provide smooth 360° rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0° or 90°. Shackles are high quality forged grade 17-4PH stainless steel.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAluminium alloy cheek plates\u003c\/b\u003e\u003cbr\u003e\nBlock cheeks are manufactured from the highest quality aluminium alloy for maximum strength and hard anodised for durability and corrosion resistance. Material optimisation and the cut-away design minimised weight and allows easy fresh water ringing of salt and debris from the bearings. The hollow hub can be used as a becket take-off or tie-up point.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eApplications\u003c\/b\u003e\u003cbr\u003e\n\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIdeal for mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats to 16m (53ft).\u003c\/li\u003e\n\u003cli\u003eGeneral applications on larger yachts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eMaterials\u003c\/b\u003e\u003cbr\u003e\n\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBearings: High compression strength, self-lubricating acetal\u003c\/li\u003e\n\u003cli\u003eHead post: Grade 2205 stainless steel\u003c\/li\u003e\n\u003cli\u003eShackles: Grade 17-4PH stainless steel\u003c\/li\u003e\n\u003cli\u003ePadeye: Grade 15-5PH stainless steel\u003c\/li\u003e\n\u003cli\u003eOther fixtures: Grade 316 stainless steel\u003c\/li\u003e\n\u003cli\u003eShackle, post \u0026amp; hub: Grade 316 stainless steel.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e Our Part # RONRF104140 | Ronstan Part # RF104140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348173431090,"sku":"RONRF104140","price":635.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF104140.jpg?v=1728021048"},{"product_id":"sch70462","title":"Schaefer Stand Up Swivel Block 60mm sheave - Aluminum","description":"\u003cp\u003eExcellent for fixed position halyard, sheet or control line fairleads. Block swivels 360º, tilts in all directions and is supported by a heavy gauge S.S. sprint to prevent deck contact. Large diameter base helps distribute loads to a larger surface area than other smaller designs.\u003c\/p\u003e\u003cp\u003e Our Part # SCH70462 | Schaefer Part # 704-62\u003c\/p\u003e","brand":"Schaefer","offers":[{"title":"Default Title","offer_id":49348187849010,"sku":"SCH70462","price":255.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SCH70462.jpg?v=1728045367"},{"product_id":"sch70662","title":"Schaefer Stand Up Swivel Block \/ 2 3\/8\" Sheave \/ Ball Bearing","description":"\u003cp\u003eExcellent for fixed position halyard, sheet or control line fairleads. Block swivels 360º, tilts in all directions and is supported by a heavy gauge S.S. sprint to prevent deck contact. Large diameter base helps distribute loads to a larger surface area than other smaller designs.\u003c\/p\u003e\u003cp\u003e Our Part # SCH70662 | Schaefer Part # 706-62\u003c\/p\u003e","brand":"Schaefer","offers":[{"title":"Default Title","offer_id":49348218093874,"sku":"SCH70662","price":265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SCH70662.jpg?v=1728040358"},{"product_id":"ant00713","title":"Antal OPF Series 70 mm Block on U-Bolt","description":"\u003cp\u003eOPF series, block on U bolt, sheave 140, SWL 5000 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT00713 | Antal Part # 713\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348282351922,"sku":"ANT00713","price":285.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00713.png?v=1728054773"},{"product_id":"ant00714","title":"Antal OPF Series 70 mm Block on Pad-Eye","description":"\u003cp\u003eThe OPF Series 70 mm Block on Pad-Eye #714 is a robust and innovative sailing accessory that's perfect for your marine adventures. With a sleek, one-piece design that eliminates the need for pins or screws, this block is both lightweight and incredibly strong. It's built for those who appreciate reliable stand up blocks that don't compromise on performance.\u003c\/p\u003e \u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e \u003cul\u003e \t\u003cli\u003eOne-piece aluminum frame for maximum strength and minimal weight\u003c\/li\u003e \t\u003cli\u003eComposite fiber sheave for low friction under high loads\u003c\/li\u003e \t\u003cli\u003eSelf-captive side ball bearing for easy maintenance\u003c\/li\u003e \t\u003cli\u003eSwivel head with three locking positions for versatile use\u003c\/li\u003e \t\u003cli\u003eCNC machined, polished, and hard black anodized for durability\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003eCrafted from hard black anodized and teflon-coated aluminum, this block boasts a 70 mm sheave and a safe working load of 1300 kg. The composite fiber sheave runs smoothly on a stainless steel hub, ensuring long-lasting performance without the need for lubrication. Compatible with various shackles, it fits seamlessly into any sailing setup.\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348310761778,"sku":"ANT00714","price":335.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00714.png?v=1728048552"},{"product_id":"ronrf44140","title":"Ronstan Series 45 Core Block Stand-Up","description":"\u003cp\u003eCore Blocks are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eUniversal Bearing \u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp\u003eDynamic and high static load performance\u003cbr\u003e\nThe Ronstan Universal Bearing incorporates our proven 2-stage bearing system.\u003cbr\u003e\nStage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.\u003cbr\u003e\nStage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.\u003cbr\u003e\nAdditionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAlloy cheek plates\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eBlock cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings.  Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.\u003c\/p\u003e\u003cp\u003e Our Part # RONRF44140 | Ronstan Part # RF44140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348366008626,"sku":"RONRF44140","price":131.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF44140.jpg?v=1728033627"},{"product_id":"ant00813","title":"Antal OPF Series 80 mm Block on U-Bolt","description":"\u003cp\u003eOPF series, block on U bolt, sheave 80, SWL 2200 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT00813 | Mfr. Part # 813\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348379312434,"sku":"ANT00813","price":375.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00813.png?v=1728032325"},{"product_id":"ant00615","title":"Antal OPF Series 60 mm Block on Screwed Pad-Eye","description":"\u003cp\u003eOPF series, block on screwed pad-eye, sheave 60, SWL 800 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n  \n  \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT00615 | Mfr. Part # 615\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348384325938,"sku":"ANT00615","price":232.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00615.png?v=1728058560"},{"product_id":"ubm-rt60mh","title":"Ubi Maior Regatta 60 mm High Load Block - Stand Up (SWL: 1800 kgs \/ Max Line: 12 mm)","description":"\u003cp\u003eDestined to vessels more performing, the RT REGATA range, collects 30 years of evolution of this type of product. These products are able to withstand high loads while maintaining its low friction ability. The RT ULTRA bloks are an evolution of the RT REGATA line,but its elements are lighter, smaller and can bear much higher loads thanks to textile attachments that are centralised in relation to the load. EVE blocks are the answer to the neverending quest for incredible resistance and lightness required by the most demanding professional racing boats and crews.\u003c\/p\u003e\u003cp\u003e Our Part # UBM-RT60MH | Mfr. Part # RT60MH\u003c\/p\u003e","brand":"Ubi Maior","offers":[{"title":"Default Title","offer_id":49348462805298,"sku":"UBM-RT60MH","price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/UBM-RT60MH.jpg?v=1728028582"},{"product_id":"ron-rf74142","title":"Ronstan Series 75 Core Block Stand-Up Kit, Suits Series 26 \u0026 30 Cars","description":"\u003cp\u003eCore Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.\u003cbr\u003e\n \n \u003cb\u003eUniversal Bearing - Dynamic and high static load performance:\u003c\/b\u003e\n \n The Ronstan Universal Bearing incorporates our proven 2-stage bearing system.\u003cbr\u003e\n \n Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.\u003cbr\u003e\n \n Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.\u003cbr\u003e\n \n Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks.\u003cbr\u003e\n \n \u003cb\u003eAlloy cheek plates:\u003c\/b\u003e\n \u003cbr\u003eBlock cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.\u003c\/p\u003e\u003cp\u003e Our Part # RON-RF74142 | Mfr. Part # RF74142\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348498129202,"sku":"RON-RF74142","price":231.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RON-RF74142.jpg?v=1728044456"},{"product_id":"ant00814","title":"Antal OPF Series 80 mm Block on Pad-Eye","description":"\u003cp\u003eOPF series, block on pad-eye, sheave 80, SWL 2200 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT00814 | Mfr. Part # 814\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348507435314,"sku":"ANT00814","price":435.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00814.png?v=1728015577"},{"product_id":"ronrf74140","title":"Ronstan Series 75 Core Block, Stand-Up","description":"\u003cp\u003eCore Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. \n \u003c\/p\u003e\n \u003cp\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003eIdeal for use on mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats up to 14 m (46 ft), cheek plates: aluminium alloy, ball bearings: high compression strength carbon black acetal, shackle, post \u0026amp;hub: grade 316 stainless steel.\u003c\/p\u003e\u003cp\u003e Our Part # RONRF74140 | Mfr. Part # RF74140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348576805170,"sku":"RONRF74140","price":249.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF74140.jpg?v=1735835429"},{"product_id":"ronrf64140","title":"Ronstan Series 60 Core Block, Stand-Up","description":"\u003cp\u003eCore Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.\u003c\/p\u003e\n  \n \u003cp\u003e\u003cb\u003eUniversal Bearing\u003c\/b\u003e\u003cbr\u003e\n Dynamic and high static load performance\u003cbr\u003e\n The Ronstan Universal Bearing incorporates our proven 2-stage bearing system\u003cbr\u003e\n Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.\u003cbr\u003e\n Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.\u003cbr\u003e\n Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks.\u003c\/p\u003e\n  \n \u003cp\u003e\u003cb\u003eAlloy cheek plates\u003c\/b\u003e\u003cbr\u003e\n Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.\u003c\/p\u003e\n  \n \u003cp\u003e\u003cb\u003eUniversal head\u003c\/b\u003e\u003cbr\u003e\n The head assembly incorporates a brass bearing washer to provide smooth 360° rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0° or 90°.\n Shackles are high quality forged grade 316 stainless steel.\u003c\/p\u003e \n \u003cp\u003e\u003cb\u003eApplications\u003c\/b\u003e\u003c\/p\u003e\n \u003cul\u003e \u003cli\u003eIdeal for mainsheet, halyard and spinnaker sheet applications on boats to 11m (36ft).\u003c\/li\u003e\n \u003cli\u003eVarious control line applications on larger yachts.\u003c\/li\u003e\n \u003cli\u003eAlloy sheave models are available for use with wire.\u003c\/li\u003e\n \u003c\/ul\u003e\u003cp\u003e Our Part # RONRF64140 | Mfr. Part # RF64140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348645519666,"sku":"RONRF64140","price":198.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF64140.jpg?v=1735835432"},{"product_id":"ubm-rt80ml","title":"Ubi Maior Regatta 80 mm Low Load Block - Stand Up (SWL: 1850 kgs \/ Max Line: 14 mm)","description":"\u003cp\u003eDestined to vessels more performing, the RT REGATA range, collects 30 years of evolution of this type of product. These products are able to withstand high loads while maintaining its low friction ability. The RT ULTRA bloks are an evolution of the RT REGATA line,but its elements are lighter, smaller and can bear much higher loads thanks to textile attachments that are centralised in relation to the load. EVE blocks are the answer to the neverending quest for incredible resistance and lightness required by the most demanding professional racing boats and crews.\u003c\/p\u003e\u003cp\u003e Our Part # UBM-RT80ML | Mfr. Part # RT80ML\u003c\/p\u003e","brand":"Ubi Maior","offers":[{"title":"Default Title","offer_id":49348658561330,"sku":"UBM-RT80ML","price":365.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/UBM-RT80ML.jpg?v=1728037995"},{"product_id":"ant00715","title":"Antal OPF Series 70 mm Block on Screwed Pad-Eye","description":"\u003cp\u003eOPF series, block on screwed pad-eye, sheave 70, SWL 1300 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n  \n  \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT00715 | Mfr. Part # 715\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348700832050,"sku":"ANT00715","price":580.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00715.png?v=1728018763"},{"product_id":"ubm-rt80mh","title":"Ubi Maior Regatta 80 mm High Load Block - Stand Up (SWL: 2400 kgs \/ Max Line: 14 mm)","description":"\u003cp\u003eDestined to vessels more performing, the RT REGATA range, collects 30 years of evolution of this type of product. These products are able to withstand high loads while maintaining its low friction ability. The RT ULTRA bloks are an evolution of the RT REGATA line,but its elements are lighter, smaller and can bear much higher loads thanks to textile attachments that are centralised in relation to the load. EVE blocks are the answer to the neverending quest for incredible resistance and lightness required by the most demanding professional racing boats and crews.\u003c\/p\u003e\u003cp\u003e Our Part # UBM-RT80MH | Mfr. Part # RT80MH\u003c\/p\u003e","brand":"Ubi Maior","offers":[{"title":"Default Title","offer_id":49348729504050,"sku":"UBM-RT80MH","price":455.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/UBM-RT80MH.jpg?v=1728054017"},{"product_id":"ant01014","title":"Antal OPF Series 100 mm Block on Pad-Eye","description":"\u003cp\u003eOPF series, block on pad-eye, sheave 100, SWL 3500 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT01014 | Mfr. Part # 1014\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348740088114,"sku":"ANT01014","price":575.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT01014.png?v=1728025751"},{"product_id":"ant00815","title":"Antal OPF Series 80 mm Block on Screwed Pad-Eye","description":"\u003cp\u003eOPF series, block on screwed pad-eye, sheave 80, SWL 2200 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT00815 | Mfr. Part # 815\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348748706098,"sku":"ANT00815","price":680.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT00815.png?v=1728059766"},{"product_id":"ant01015","title":"Antal OPF Series 100 mm Block on Screwed Pad-Eye","description":"\u003cp\u003eOPF series, block on screwed pad-eye, sheave 100, SWL 3500 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT01015 | Mfr. Part # 1015\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348816404786,"sku":"ANT01015","price":860.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT01015.png?v=1728023065"},{"product_id":"ant01214","title":"Antal OPF Series 120 mm Block on Pad-Eye","description":"\u003cp\u003eOPF series, block on pad-eye, sheave 120, SWL 3500 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT01214 | Mfr. Part # 1214\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348835967282,"sku":"ANT01214","price":900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT01214.png?v=1728044683"},{"product_id":"ronrf69140","title":"Ronstan Series 60 Orbit Block, Single, Stand-Up, 90 Deg.","description":"\u003cp\u003eOrbit blocks are a no-compromise product range developed to meet the demands and expectations of the very dedicated and increasingly professional racing sailor. Side cheeks incorporating head structure and hub are precision machined as a single part from solid alloy, leaving material only where it contributes to the load carrying capacity of the block and eliminating the need for additional fasteners. The Orbit sheave has captive acetal or Torlon ball bearings for side thrust loads, eliminating the need for side retainer plates. This reduces weight and allows for a wider bearing surface that can accommodate longer Torlon needles – achieving a substantially higher strength-to-weight ratio.\u003c\/p\u003e\u003cp\u003eThe stand-up Orbit blocks are supplied with stainless steel padeyes and rubber support bases.\u003c\/p\u003e\u003cp\u003e Our Part # RONRF69140 | Mfr. Part # RF69140\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348905009458,"sku":"RONRF69140","price":425.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF69140.jpg?v=1735835419"},{"product_id":"ant812154","title":"Antal Composite Fiber Series 150 mm Block on Pad-Eye","description":"\u003cp\u003e\u003cb\u003eXXL series, block on pad-eye, sheave 150, SWL 6500 kg.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eThe whole composite fibre range uses sheaves on composite fibre bearings and double self-captive Delrin ball thrust bearings.\u003c\/p\u003e\u003cp\u003eThe sheaves are easy to dismantle for cleaning and need no lubrication. The sides are made of 3571 TA16 light alloy and are thickly anodized to ensure absolute wear-and corrosion proofing, with all the edges smoothed off for better handling. The nuts and bolts have been replaced with recessed screws and pins, considerably reducing weight and eliminating any projecting parts.\u003c\/p\u003e\u003cp\u003eThe steel coupling revolves on a fibre washer and can easily be locked in one of two main positions. Sheaves. Sizes 150, 180, 220 and 250 mm use thickly anodized aluminium sheaves. The main bearing is made of high-strength composite fibre impregnated with self-lubricating substances. A double lateral Delrin ball bearing makes the sheaves slide perfectly smoothly. Sheaves are supplied with the s.steel central hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT812154 | Mfr. Part # 812.154\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348921590066,"sku":"ANT812154","price":1160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT812154.jpg?v=1728036396"},{"product_id":"ant01215","title":"Antal OPF Series 120 mm Block on Screwed Pad-Eye","description":"\u003cp\u003eOPF series, block on screwed pad-eye, sheave 120, SWL 5000 kg. New by Antal the ne Piece Frameblock, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and teflon coated aluminium frame in one piece.\u003c\/p\u003e\n \n \u003cp\u003eA complete range from 50 to 140 mm sheaves in single, double, triple, fiddle, and deck versions, for webbing or shackle connection. Sizes are based on the range of HR shackles available and on their safe working load (SWL). The HR swivel head. Made in high resistance s.steel, with three positions: swiveling head, longitudinal lock and transversal lock. HR shackles included. The one-piece-frame. The one-piece aluminium extruded body is the strongest and lightest solution, no assembling pin rivets or screws and nuts. CNC machined - polished - hard black anodized and teflon coated. The composite fibre sheave. The resin (aluminium on larger mod) sheave runs on the main Composite Fibre bearing and on a ground s.steel hub: low friction highloads - no lubricant required. The self-captive side ball bearing reduces the friction and makes disassembling, cleaning and maintenance very easy. Sheaves are supplied with the s.steel hub, they are available separately.\u003c\/p\u003e\u003cp\u003e Our Part # ANT01215 | Mfr. Part # 1215\u003c\/p\u003e","brand":"Antal","offers":[{"title":"Default Title","offer_id":49348921655602,"sku":"ANT01215","price":1160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/ANT01215.png?v=1728036788"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/download_7f14151c-ea6e-4898-b68d-5da2e4d5a6dc.jpg?v=1736787031","url":"https:\/\/www.mauripro.com\/collections\/sailboat-blocks-stand-up-blocks.oembed?page=5","provider":"MAURIPRO","version":"1.0","type":"link"}