{"title":"Selden Deck Hardware Dimensioning Guide","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v2.css\"\u003e\u003cstyle\u003e.mpom .om-tbl.nw td+td{white-space:nowrap}.mpom details.om-dd{position:relative;margin:0}.mpom details.om-dd\u003esummary{list-style:none;cursor:pointer}.mpom details.om-dd\u003esummary::-webkit-details-marker{display:none}.mpom .om-dd-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:360px;background:#fff;border:1px solid #e3e5e8;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.14);z-index:30;padding:6px}.mpom .om-dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:10px 12px;border-radius:4px;font-size:14px;font-weight:600;color:#2a2b2a!important;text-decoration:none!important}.mpom .om-dd-menu a:hover{background:#f5f6f8}.mpom .om-dd-menu small{font-weight:400;color:#5f6368;white-space:nowrap}\u003c\/style\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag ss\"\u003eSELECTION GUIDE\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eSize Selden blocks and traveller cars by boat length: the dimensioning charts for main sheet, main, genoa and spinnaker halyard blocks, and main sheet, genoa and selftacker cars.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eSelden Deck Hardware Dimensioning Guide\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 3 pages · 0.1 MB\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\" style=\"border-bottom:0\"\u003e\n\u003cspan\u003eLanguage\u003c\/span\u003e\u003cb\u003eEnglish\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-acts\"\u003e\n\u003ca class=\"om-btn dl\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Deck-Hardware-Dimensioning-Guide.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 4v11\"\u003e\u003c\/path\u003e\u003cpath d=\"m7 10 5 5 5-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 20h14\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Download PDF\u003c\/a\u003e\u003ca class=\"om-btn buy\" href=\"\/collections\/selden-blocks-single-blocks\"\u003eView Collection\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-read\"\u003eHow to Read\u003c\/a\u003e\u003ca href=\"#om-blocks\"\u003eSheet \u0026amp; Halyard Blocks\u003c\/a\u003e\u003ca href=\"#om-cars\"\u003eCars\u003c\/a\u003e\u003ca href=\"#om-products\"\u003eProducts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Deck-Hardware-Dimensioning-Guide-Cover.png\" alt=\"Selden Deck Hardware Dimensioning Guide\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-read\"\u003e\n\u003ch2 class=\"om-h\"\u003eReading the Charts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEach chart plots boat length (ft, 10 to 70) against the block or car size Selden recommends for that position.\u003c\/li\u003e\n\u003cli\u003eBlock sizes run BBB 20, BBB 30, BBB 40 (ball bearing), PBB 50, PBB 60, PBB 70, PBB 80, PBB 100 (plain bearing) and RBB 60, RBB 80 (roller bearing).\u003c\/li\u003e\n\u003cli\u003eCar charts use System 22, System 30 (plain, high load, ball bearing, performance, performance toggle, performance fixed block, single, double) and System 42.\u003c\/li\u003e\n\u003cli\u003eMain sheet charts are split by sheeting position: end sheeted (S\u0026gt;90% of E) and mid sheeted (S\u0026gt;50% of E).\u003c\/li\u003e\n\u003cli\u003eWhere bars overlap, more than one size covers your length.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"om-note\"\u003eRead the bars directly on the charts below; no values are transcribed from them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-blocks\"\u003e\n\u003ch2 class=\"om-h\"\u003eMain Sheet and Halyard Blocks\u003c\/h2\u003e\n\u003ch3 class=\"om-h3\"\u003eMain sheet, end sheeted (S\u0026gt;90% of E)\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Main-Sheet-End-Sheeted-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Main sheet, end sheeted (S\u0026gt;90% of E), block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"om-h3\"\u003eMain halyard mast base block\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Main-Halyard-Mast-Base-Block-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Main halyard mast base block, block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"om-h3\"\u003eMain sheet, mid sheeted (S\u0026gt;50% of E)\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Main-Sheet-Mid-Sheeted-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Main sheet, mid sheeted (S\u0026gt;50% of E), block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"om-h3\"\u003eGenoa halyard mast base block\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Genoa-Halyard-Mast-Base-Block-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Genoa halyard mast base block, block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"om-h3\"\u003eSpin halyard mast base block\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Spin-Halyard-Mast-Base-Block-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Spin halyard mast base block, block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"om-h3\"\u003eSpin halyard topmast block\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Spin-Halyard-Topmast-Block-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Spin halyard topmast block, block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-cars\"\u003e\n\u003ch2 class=\"om-h\"\u003eTraveller and Sheet Cars\u003c\/h2\u003e\n\u003ch3 class=\"om-h3\"\u003eMain sheet car, end sheeted (S\u0026gt;90% of E)\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Main-Sheet-Car-End-Sheeted-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Main sheet car, end sheeted (S\u0026gt;90% of E), block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"om-h3\"\u003eGenoa sheet car\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Genoa-Sheet-Car-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Genoa sheet car, block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"om-h3\"\u003eMain sheet car, mid sheeted (S\u0026gt;50% of E)\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Main-Sheet-Car-Mid-Sheeted-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Main sheet car, mid sheeted (S\u0026gt;50% of E), block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"om-h3\"\u003eSelftacker sheet car\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Dimensioning-Guide-Selftacker-Sheet-Car-Chart.png\" alt=\"Selden deck hardware dimensioning chart: Selftacker sheet car, block or system size against boat length in feet\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eNeed a part that isn't listed? \u003ca href=\"\/pages\/contact\"\u003eAsk us to source it\u003c\/a\u003e and quote the part number from the PDF.\u003c\/p\u003e\n\u003ch2 class=\"om-h\" id=\"om-products\"\u003eProducts in this Selection Guide\u003c\/h2\u003e\n\u003c\/div\u003e","products":[{"product_id":"sel40210113r","title":"Selden 20 Ball Bearing Block - Single Cheek","description":"\u003cp data-start=\"92\" data-end=\"649\"\u003eThe Selden 20 Ball Bearing Block - Single Cheek (402-101-13R) is a 20mm ball bearing block designed for control lines on dinghies and keelboats. It features stainless steel ball bearings for smooth rotation and is made from lightweight, durable materials. Ideal for guiding lines on deck, it provides efficient performance with minimal friction. Easy to install with two M4 screws for secure mounting. Perfect for high-performance, low-load applications. Designed for reliability and long-lasting use in demanding sailing conditions.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40210113R | \u003cspan\u003eMfr. Part\u003c\/span\u003e # 402-101-13R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347587473714,"sku":"SEL40210113R","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40210113R.jpg?v=1728030212"},{"product_id":"sel40310113r","title":"Selden 30 Ball Bearing Block - Single Becket Strap","description":"\u003cp data-start=\"92\" data-end=\"635\"\u003eThe Selden 30 Ball Bearing Block - Single Becket Strap (403-101-13R) is ideal for smaller boats or trim lines with dynamic loads. It features stainless steel ball bearings for smooth rotation and a glass fiber reinforced polyamide construction for durability. The acetal bearing cage prevents ball-to-ball friction and reduces weight. Perfect for applications requiring low friction and reliable performance. Designed for high-efficiency line handling. Ideal for sailors seeking durable, high-performance deck hardware.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40310113R | \u003cspan\u003eMfr. Part \u003c\/span\u003e# 403-101-13R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347587637554,"sku":"SEL40310113R","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40310113R.jpg?v=1728057795"},{"product_id":"sel40410116r","title":"Selden 40 Ball Bearing Block - Single Tie On","description":"\u003cp data-start=\"92\" data-end=\"631\"\u003eThe Selden 40 Ball Bearing Block - Single Tie On (404-101-16R) is a lightweight, flexible 40mm ball bearing block designed for dynamic applications under medium loads. It ties directly to rigging points, eliminating the need for shackles. Stainless steel ball bearings ensure smooth, low-friction performance. Glass fiber reinforced cheeks provide durability and strength. Ideal for moderate and dynamic loads with minimal friction. Perfect for efficient, high-performance rigging systems on medium-sized boats.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410116R| Selden Part # 404-101-16R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347605266738,"sku":"SEL40410116R","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40410116R.jpg?v=1728048736"},{"product_id":"sel40410117r","title":"Selden 40 Ball Bearing Block - Single Cheek","description":"\u003cp data-start=\"92\" data-end=\"600\"\u003eThe Selden 40 Ball Bearing Block - Single Cheek (404-101-17R) is designed for fixed mounting on flat surfaces. It features a 40mm sheave with stainless steel ball bearings for smooth, low-friction operation under medium loads. Glass fiber reinforced cheeks ensure strength and durability. Ideal for moderate and dynamic loads in high-performance rigs. Provides reliable line handling with minimal friction. Perfect for efficient deck applications and demanding sailing conditions.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410117R | \u003cspan\u003eMfr. Part \u003c\/span\u003e# 404-101-17R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347609461042,"sku":"SEL40410117R","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40410117R.jpg?v=1728045564"},{"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":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40310112R.jpg?v=1728063231"},{"product_id":"sel40310122r","title":"Selden 30 Ball Bearing Block - Single Through Deck","description":"\u003cp data-end=\"648\" data-start=\"92\"\u003eThe Selden 30 Ball Bearing Block - Single Through Deck (403-101-22R) is a 30mm ball bearing block designed for leading lines through a coaming or deck. Constructed with stainless steel ball bearings and glass fiber reinforced polyamide for strength and lightweight durability. Features an acetal bearing cage to reduce ball-to-ball friction and weight. Mounted with 2 M5 screws for easy installation. Ideal for reliable line handling in high-performance rigs. Perfect for deck or coaming installations on medium-sized boats.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40310122R | \u003cspan\u003eMfr. Part\u003c\/span\u003e # 403-101-22R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347614146866,"sku":"SEL40310122R","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40310122R.jpg?v=1728048850"},{"product_id":"sel40310123r","title":"Selden 30 Ball Bearing Block - Single Lead","description":"\u003cp data-start=\"92\" data-end=\"584\"\u003eThe Selden 30 Ball Bearing Block - Single Lead (403-101-23R) is a 30mm ball bearing block designed for lower loads on smaller boats or trim lines. It features stainless steel ball bearings for smooth, reliable operation. Easy to install with 2 M5 screws for secure attachment. Ideal for use with control lines in main sheet track systems. Provides efficient, low-friction performance for high-demand rigs. Perfect for lightweight rigging applications on smaller boats.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40310123R | \u003cspan\u003eMfr. Part\u003c\/span\u003e # 403-101-23R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347614179634,"sku":"SEL40310123R","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40310123R.jpg?v=1728042342"},{"product_id":"sel40310101r","title":"Selden 30 Ball Bearing Block - Single","description":"\u003cp data-start=\"92\" data-end=\"673\"\u003eThe Selden 30 Ball Bearing Block - Single (403-101-01R) is a 30mm ball bearing block with a swiveling shaft and a swivel lock for secure 0° or 90° shackle positioning. It features stainless steel ball bearings for strength and smooth rotation, and a glass fiber reinforced polyamide sheave for durability. Acetal bearing cages reduce friction and weight. The center hole can be used as a becket for added rigging options. Ideal for moderate and dynamic loads with low friction. Perfect for high-performance rigs requiring reliable line handling.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40310101R| Selden Part # 403-101-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347614212402,"sku":"SEL40310101R","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40310101R.jpg?v=1728049509"},{"product_id":"sel40410102r","title":"Selden 40 Ball Bearing Block - Single Strap","description":"\u003cp data-start=\"92\" data-end=\"625\"\u003eThe Selden 40 Ball Bearing Block - Single Strap (404-101-02R) is a 40mm ball bearing block with a stainless attachment strap for secure rigging. It features stainless steel ball bearings and a polymer sheave for minimal friction and smooth operation. Designed for dynamic load applications, it provides high strength and precise control. Ideal for high-performance rigs requiring efficient, low-friction line handling. Perfect for demanding sailing conditions. Built for reliability and durability under load.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410102R | Selden Part # 404-101-02R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347624698162,"sku":"SEL40410102R","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40410102R.jpg?v=1728035224"},{"product_id":"sel40500101r","title":"Selden 50 Plain Bearing Block - Single","description":"\u003cp\u003eThe Selden 50 Plain Bearing Block - Single (405-001-01R) is designed for medium-sized boats, providing reliable performance for various applications. It features an acetal sheave and a stainless steel strap for enhanced safety. The glass fiber reinforced composite cheeks prevent lines from wedging, ensuring smooth operation. A sliding swivel locking mechanism allows adjustable shackle positioning at 0°, 90°, or swiveling. Ideal for handling heavy and static loads. Perfect for sailors seeking durable, high-performance deck hardware.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40500101R| \u003cspan\u003eMfr. Part\u003c\/span\u003e # 405-001-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347624730930,"sku":"SEL40500101R","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40500101R.jpg?v=1728049305"},{"product_id":"sel40410120r","title":"Selden 40 Ball Bearing Block - Single Becket Strap","description":"\u003cp data-start=\"92\" data-end=\"675\"\u003eThe Selden 40 Ball Bearing Block - Single Becket Strap (404-101-20R) is a 40mm ball bearing block designed for dynamic applications under medium loads. It features a becket for added rigging flexibility and a stainless strap for secure mounting. Stainless steel ball bearings ensure smooth, low-friction operation, while glass fiber reinforced cheeks provide durability. Ideal for moderate and dynamic loads requiring minimal friction. Perfect for high-performance rigs and demanding sailing conditions. Designed for reliable, efficient operation.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410120R | Selden Part # 404-101-20R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347636396338,"sku":"SEL40410120R","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40410120R.jpg?v=1728027825"},{"product_id":"sel40310103r","title":"Selden 30 Ball Bearing Block - Single Becket","description":"\u003cp data-start=\"92\" data-end=\"706\"\u003eThe Selden 30 Ball Bearing Block - Single Becket (403-101-03R) features a 30mm ball bearing block with a swiveling shaft and a swivel lock for secure 0° or 90° shackle positioning. Stainless steel ball bearings ensure strength and smooth rotation, while glass fiber reinforced polyamide sheaves and cheeks provide durability. Acetal bearing cages reduce friction and weight. The center hole can be used as a becket for added rigging flexibility. Ideal for moderate and dynamic loads with minimal friction. Perfect for high-performance rigs requiring smooth, efficient operation.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40310103R | \u003cspan\u003eMfr. Part\u003c\/span\u003e # 403-101-03R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347662250290,"sku":"SEL40310103R","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40310103R.jpg?v=1728032709"},{"product_id":"sel40410101r","title":"Selden 40 Ball Bearing Block - Single","description":"\u003cp data-start=\"92\" data-end=\"696\"\u003eThe Selden 40 Ball Bearing Block - Single (404-101-01R) is a 40mm ball bearing block designed for dynamic applications and medium loads. It features a swiveling shaft with a swivel lock for fixed 0° or 90° shackle positioning. Stainless steel ball bearings ensure smooth, low-friction rotation, while glass fiber reinforced polyamide sheave and cheeks provide durability. Acetal bearing cages reduce friction and weight. The center hole can be used as a becket for additional rigging flexibility. Ideal for moderate and dynamic loads with minimal friction.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410101R | Selden Part # 404-101-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347677520178,"sku":"SEL40410101R","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40410101R.jpg?v=1728049135"},{"product_id":"sel40500102r","title":"Selden 50 Plain Bearing Block - Single Becket","description":"\u003cp\u003eThe Selden 50 Plain Bearing Block - Single Becket (405-001-02R) is designed for medium-sized boats, offering reliable performance for various applications. It features an acetal sheave and stainless steel strap for enhanced safety. The glass fiber reinforced composite cheeks prevent lines from wedging for smooth operation. A sliding swivel locking mechanism allows adjustable shackle positioning at 0°, 90°, or swiveling. Ideal for heavy and static loads, this block provides strength and durability. Perfect for sailors seeking high-performance, long-lasting deck hardware.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40500102R | \u003cspan\u003eMfr. Part\u003c\/span\u003e # 405-001-02R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347677684018,"sku":"SEL40500102R","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40500102R.jpg?v=1728054247"},{"product_id":"sel40410103r","title":"Selden 40 Ball Bearing Block - Single Swivel Becket","description":"\u003cp data-start=\"92\" data-end=\"671\"\u003eThe Selden 40 Ball Bearing Block - Single Swivel Becket (404-101-03R) is a 40mm ball bearing block designed for dynamic applications under medium loads. It features a swiveling shaft with a swivel lock, fixing the shackle at 0° or 90°. Stainless steel ball bearings ensure smooth rotation, while glass fiber reinforced cheeks and Acetal bearing cages reduce friction. Ideal for moderate and dynamic loads, offering minimal friction. Perfect for high-performance rigs with reliable operation. Designed for demanding marine environments.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410103R | Selden Part # 404-101-03R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347703439666,"sku":"SEL40410103R","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40410103R.jpg?v=1728036708"},{"product_id":"sel40410122r","title":"Selden 40 Ball Bearing Block - Single Through Deck","description":"\u003cp data-start=\"92\" data-end=\"662\"\u003eThe Selden 40 Ball Bearing Block - Single Through Deck (404-101-22R) is designed for running lines through deck coamings or bulkheads. It features a 40mm sheave supported by stainless steel ball bearings for smooth, low-friction operation under medium loads. Glass fiber reinforced cheeks and box provide enhanced strength and durability. Ideal for moderate and dynamic loads, offering minimal friction for efficient line handling. Perfect for high-performance rigs requiring reliable performance. Built for demanding marine environments.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410122R | Selden Part # 404-101-22R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347707011378,"sku":"SEL40410122R","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SELDEN_2.jpg?v=1754341400"},{"product_id":"sel40600101r","title":"Selden 60 Plain Bearing Block - Single","description":"\u003cp\u003eThe Selden 60 Plain Bearing Block - Single Fixed (406-001-01R) is a robust 60mm plain bearing block with composite reinforced sides for strength. It includes a polymer sheave and stainless steel strap engineered for corrosion resistance and durability. Fixed shackle configuration provides consistent alignment under load with no swivel. Ideal for steady, low-friction operation in sailing and rigging systems. Designed for demanding environments and moderate to heavy line loads. Perfect for efficient, reliable rigging performance.\u003c\/p\u003e\u003cp\u003eOur Part # SEL40600101R | Selden Part # 406-001-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347707109682,"sku":"SEL40600101R","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40600101R.jpg?v=1728054435"},{"product_id":"sel40600102r","title":"Selden 60 Plain Bearing Block - Single Becket","description":"\u003cp\u003eThe Selden 60 Plain Bearing Block - Single Swivel (406-001-02R) is a 60mm plain bearing block with glass-fiber-reinforced polyamide sides for durability. It offers a polymer sheave and stainless steel strap for long-lasting, corrosion-resistant strength. The swivel shackle design enables rotating or fixed positioning via adjustable lock. Ideal for medium to heavy-duty rigging that needs flexibility and low friction. Crafted for high-performance sailing systems in demanding marine conditions. Ensures smooth, precise line handling.\u003c\/p\u003e\u003cp\u003eOur Part # SEL40600102R | Selden Part # 406-001-02R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347747053874,"sku":"SEL40600102R","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40600102R.jpg?v=1728027814"},{"product_id":"sel40700101r","title":"Selden 70 Plain Bearing Block - Single","description":"\u003cp\u003eThe Selden 70 Plain Bearing Block - Single #407-001-01R is your go-to choice for a durable and efficient single block in sailing. Crafted with top-notch materials, it strikes the perfect balance between strength and lightweight performance, making it a reliable component for any rigging setup. Enjoy peace of mind knowing it can handle various sailing conditions with ease.\u003c\/p\u003e\u003cp\u003eDesigned with top-quality materials, this single block features a glass fibre reinforced composite construction and marine grade stainless steel components. Its robust design is made to endure the demanding conditions of sailing while providing maximum efficiency and reliability. Ideal for sailors seeking a high-performance block that ensures smooth operation and longevity.\u003c\/p\u003e\u003cp\u003eOur Part # SEL40700101R| Selden Part # 407-001-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347803414834,"sku":"SEL40700101R","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40700101R.jpg?v=1728037408"},{"product_id":"sel40700102r","title":"Selden 70 Plain Bearing Block - Single Becket","description":"\u003cp\u003eThe Selden 70 Plain Bearing Block - Single Becket #407-001-02R is your go-to choice for high-strength sailing needs. Crafted to offer a superb strength-to-weight ratio using top-notch materials, this composite block promises durability and performance without compromise. It's designed to seamlessly interact with your rig, ensuring smooth sailing in any condition.\u003c\/p\u003e\u003cp\u003eThis composite block is made from glass fibre reinforced composite and marine-grade stainless steel, ensuring it stands up to harsh marine environments. The block is equipped with a glass fibre reinforced sheave featuring a Teflon® bushing, which enhances its performance and longevity. Its shackle with a 6 mm body and 8 mm pin guarantees a strong yet lightweight build, while the stainless steel strap adds to its durability. The sliding swivel locking mechanism offers flexibility, making it an ideal choice for your sailing adventures.\u003c\/p\u003e\u003cp\u003ePerfect for use in sailing, the block is designed to handle high loads while ensuring smooth operation. Its unique construction makes it suitable for a variety of marine applications, offering reliable performance every time.\u003c\/p\u003e\u003cp\u003eOur Part # SEL40700102R| Selden Part # 407-001-02R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347850273074,"sku":"SEL40700102R","price":70.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40700102R.jpg?v=1728062289"},{"product_id":"sel40500103r","title":"Selden 50 Plain Bearing Block - Single Cam","description":"\u003cp\u003eThe Selden 50 Plain Bearing Block - Single Cam (405-001-03R) is designed for medium-sized boats, suitable for various applications. It features an acetal sheave and stainless steel strap for enhanced safety. The glass fiber reinforced composite cheeks prevent lines from wedging. A sliding swivel locking mechanism allows for adjustable shackle positioning at 0°, 90°, or swiveling. The 38 mm cam cleat includes composite cams and a top-guide for secure line holding. Ideal for sailors seeking reliable, high-performance deck hardware.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40500103R | \u003cspan\u003eMfr. Part #\u003c\/span\u003e 405-001-03R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347885531442,"sku":"SEL40500103R","price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40500103R.jpg?v=1728026723"},{"product_id":"sel40500104r","title":"Selden 50 Plain Bearing Block - Single Becket Cam","description":"\u003cp data-start=\"92\" data-end=\"657\"\u003eThe Selden 50 Plain Bearing Block - Single Becket Cam (405-001-04R) is designed for medium-sized boats, offering versatile application options. It features an acetal sheave and stainless steel strap for enhanced safety. The glass fiber reinforced composite cheeks prevent lines from wedging. A sliding swivel locking mechanism allows for adjustable shackle positioning at 0°, 90°, or swiveling. The 38 mm cam cleat includes composite cams and a top-guide for secure line holding. Ideal for sailors seeking durable and reliable deck hardware.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40500104R | \u003cspan\u003eMfr. Part\u003c\/span\u003e # 405-001-04R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347911647538,"sku":"SEL40500104R","price":80.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40500104R.jpg?v=1728028533"},{"product_id":"sel40600103r","title":"Selden 60 Plain Bearing Block - Single Cam","description":"\u003cp data-start=\"92\" data-end=\"718\"\u003eThe Selden 60 Plain Bearing Block - Single Cam (406-001-03R) is a 60mm plain bearing block with a 38mm composite cam cleat, designed for lines Ø8-12mm. The cam cleat arm is adjustable to multiple angles for flexibility. Ideal for heavy loads in halyard, mainsheet, and boom vang systems. Features include a stainless steel strap, glass fiber reinforced composite cheeks, and a sliding swivel locking mechanism for shackle positioning at 0°, 90°, or swiveling. Perfect for heavy and static loads with reliable operation. Designed for high-performance rigging systems.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40600103R | Selden Part # 406-001-03R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347937108274,"sku":"SEL40600103R","price":86.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40600103R.jpg?v=1728059776"},{"product_id":"sel40600118r","title":"Selden 60 Plain Bearing Block - Single Cheek Quick Lock Counter Clockwise","description":"\u003cp data-start=\"92\" data-end=\"675\"\u003eThe Selden 60 Plain Bearing Block - Single Cheek Quick Lock Counter Clockwise (406-001-18R) is a 60mm plain bearing block with Quick-Lock for securing lines to a winch or preventing spinnaker sheets from unreeving. The spring-loaded locking arm allows temporary line locking to free up the winch for other uses. Ideal for locking jib track control lines at specific angles. Designed to rotate anti-clockwise when tensioning the line. Prevents accidental locking with a safety mechanism. Perfect for efficient line management in dynamic sailing conditions.\u003c\/p\u003e\n\u003cp\u003eOur Part # \u003cspan\u003eSEL40600118R\u003c\/span\u003e | Selden Part # \u003cspan\u003e406-001-18R\u003c\/span\u003e\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347940843826,"sku":"SEL40600118R","price":87.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40600118R.jpg?v=1728062504"},{"product_id":"sel40600121r","title":"Selden 60 Plain Bearing Block - Single Cheek Quick Lock Clockwise","description":"\u003cp data-start=\"92\" data-end=\"676\"\u003eThe Selden 60 Plain Bearing Block - Single Cheek Quick Lock Clockwise (406-001-21R) features a 60mm plain bearing block with Quick-Lock for securing lines to a winch or preventing spinnaker sheets from unreeving. The spring-loaded locking arm allows temporary line locking, freeing up the winch for other tasks. Ideal for jib track control lines, offering angle and locking flexibility. Rotates clockwise when tensioning the line. Prevents accidental locking with its safety mechanism. Perfect for efficient line management in dynamic sailing applications.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40600121R| Selden Part # 406-001-21R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347942744370,"sku":"SEL40600121R","price":88.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40600121R.jpg?v=1728019546"},{"product_id":"sel40600104r","title":"Selden 60 Plain Bearing Block - Single Becket Cam","description":"\u003cp data-start=\"92\" data-end=\"703\"\u003eThe Selden 60 Plain Bearing Block - Single Becket Cam (406-001-04R) features a 60mm plain bearing block with a 38mm composite cam cleat for secure line handling. The cam cleat arm is adjustable to multiple angles for flexibility. Includes glass fiber reinforced cheeks and a stainless steel strap for enhanced durability and safety. Sliding locking mechanism allows for 0°, 90°, or swiveling shackle positions, with a detachable pin for a spliced eye. Ideal for tackles, barber haulers, boom vangs, and more. Perfect for high-performance rigging applications.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40600104R | Selden Part # 406-001-04R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49347950412082,"sku":"SEL40600104R","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40600104R.jpg?v=1728027741"},{"product_id":"sel40410104r","title":"Selden 40 Ball Bearing Block - Single Swivel Cam","description":"\u003cp data-start=\"92\" data-end=\"700\"\u003eThe Selden 40 Ball Bearing Block - Single Swivel Cam (404-101-04R) features a 40mm ball bearing block with an integrated 27mm composite cam cleat for secure line holding and easy adjustments. The cam cleat arm is adjustable to multiple angles. Equipped with a swiveling shaft and a plastic washer that locks the shackle at 0° or 90°. Stainless steel ball bearings provide smooth rotation under medium loads, while glass fiber reinforced cheeks enhance durability. The center hole can be used as a becket. Ideal for moderate and dynamic loads with low friction.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410104R | Selden Part # 404-101-04R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348005757234,"sku":"SEL40410104R","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40410104R.jpg?v=1728060523"},{"product_id":"sel40410105r","title":"Selden 40 Ball Bearing Block - Single Beckett Cam","description":"\u003cp data-start=\"92\" data-end=\"715\"\u003eThe Selden 40 Ball Bearing Block - Single Becket Cam (404-101-05R) features a 40mm sheave, swiveling shaft, becket, and integrated 27mm composite cam cleat for efficient line management. It includes a swivel lock with a plastic washer to fix the shackle at 0° or 90°. The cam cleat arm adjusts to multiple angles for flexible control. Stainless steel ball bearings ensure smooth rotation, while glass fiber reinforced cheeks and Acetal bearing cages reduce friction and weight. Ideal for moderate and dynamic loads with minimal friction, providing high-performance line handling.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40410105R | Selden Part # 404-101-05R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348026073394,"sku":"SEL40410105R","price":111.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40410105R.jpg?v=1728061462"},{"product_id":"sel40800101r","title":"Selden 80 Plain Bearing Block - Single","description":"\u003cp data-start=\"92\" data-end=\"687\"\u003eThe Selden 80 Plain Bearing Block - Single (408-001-01R) is an 80mm multi-purpose block designed for efficient line handling. It features a glass fiber reinforced sheave with a polymer bushing and stainless steel strap for added safety. The glass fiber reinforced composite cheeks prevent lines from wedging. The shackle has an ø8mm body and ø10mm pin for optimized strength and weight savings. Sliding swivel locking mechanism allows for adjustable shackle positioning at 0°, 90°, or swiveling. Ideal for heavy and static loads with minimal friction.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40800101R | Selden Part # 408-001-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348062740786,"sku":"SEL40800101R","price":124.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40800101R.jpg?v=1728040322"},{"product_id":"sel40800102r","title":"Selden 80 Plain Bearing Block - Single Becket","description":"\u003cp data-start=\"92\" data-end=\"769\"\u003eThe Selden 80 Plain Bearing Block - Single Becket (408-001-02R) is designed for high strength and performance on larger boats. It features a glass fiber reinforced sheave with a polymer bushing and stainless steel strap for durability. The block includes a swivel locking mechanism, glass fiber reinforced composite cheeks to prevent jamming, and a becket with detachable pin for a spliced eye. The ø8mm body and ø10mm pin optimize strength and weight savings. Ideal for spinnaker sheets, barber haulers, and more. Sliding swivel locking mechanism allows for adjustable shackle positions at 0°, 90°, or swiveling.\u003c\/p\u003e\n\u003cp data-start=\"92\" data-end=\"769\"\u003eOur Part # \u003cspan\u003eSEL40800102R\u003c\/span\u003e | \u003cspan\u003eManuf. Code\u003c\/span\u003e # \u003cspan\u003e408-001-02R\u003c\/span\u003e\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348085121330,"sku":"SEL40800102R","price":133.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40800102R.jpg?v=1728042927"},{"product_id":"sel40800118r","title":"Selden 80 Plain Bearing Block - Single Cheek Quick Lock Counter Clockwise","description":"\u003cp data-start=\"92\" data-end=\"733\"\u003eThe Selden 80 Plain Bearing Block - Single Cheek Quick Lock Counter Clockwise (408-001-18R) is designed to lead lines to a winch and temporarily lock them with a spring-loaded locking arm. Ideal for securing inactive spinnaker sheets and preventing unreeving, or locking jib track control lines. The locking arm prevents accidental locking, while the block rotates anti-clockwise when tensioning the line. Features a glass fiber reinforced sheave, polymer bushing, stainless steel strap, and composite cheeks to prevent jamming. Perfect for high-performance rigs and demanding marine environments.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40800118R | Selden Part # 408-001-18R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348242637106,"sku":"SEL40800118R","price":161.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40800118R.jpg?v=1728034138"},{"product_id":"sel40800121r","title":"Selden 80 Plain Bearing Block - Single Cheek Quick Lock Clockwise","description":"\u003cp data-start=\"92\" data-end=\"733\"\u003eThe Selden 80 Plain Bearing Block - Single Cheek Quick Lock Clockwise (408-001-21R) is designed to lead lines to a winch and temporarily lock the line with a spring-loaded locking arm. Ideal for securing inactive spinnaker sheets and preventing unreeving, or locking jib track control lines at specific angles. The locking arm prevents accidental locking. Rotates clockwise when tensioning the line. Features a glass fiber reinforced sheave with polymer bushing, stainless steel strap, and composite cheeks to prevent jamming. Perfect for high-performance rigging and demanding sailing conditions.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40800121R | Selden Part # 408-001-21R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348262035762,"sku":"SEL40800121R","price":164.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40800121R.jpg?v=1728048620"},{"product_id":"sel40620103r","title":"Selden 60 Roller Bearing Block - Single Backstay\/Halyard","description":"\u003cp data-start=\"92\" data-end=\"662\"\u003eThe Selden 60 Roller Bearing Block - Single Backstay\/Halyard (406-201-03R) is perfect for backstays in a cascade system or 2:1 main halyard arrangement. Made with machined black anodized aluminium and Torlon roller bearings, it ensures durability and performance. Acetal thrust bearings stabilize the sheave under side loads. Seldén RBB offers low-friction performance for high-load rigging. Ideal for high-performance backstay and halyard systems. Perfect for demanding marine conditions, delivering smooth operation.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40620103R | Mfr. Part # 406-201-03R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348442620210,"sku":"SEL40620103R","price":208.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40620103R.jpg?v=1728036372"},{"product_id":"sel40620101r","title":"Selden 60 Roller Bearing Block - Single Swivel","description":"\u003cp data-start=\"92\" data-end=\"734\"\u003eThe Selden 60 Roller Bearing Block - Single Swivel (406-201-01R) is designed for high-load dynamic applications, featuring Torlon roller bearings for durability and performance. Built with machined black anodized aluminium and marine-grade stainless steel, the swiveling shaft can be fixed at 0° or 90°. The ø6mm body and ø8mm pin optimize strength while reducing weight. Acetal thrust bearings stabilize the sheave under side loads. Part of the Seldén RBB performance range, offering low-friction for high-efficiency rigging. Ideal for demanding sailing conditions and dynamic rigging.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40620101R | Mfr. Part # 406-201-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348442718514,"sku":"SEL40620101R","price":208.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40620101R.jpg?v=1728061849"},{"product_id":"sel40620102r","title":"Selden 60 Roller Bearing Block - Single Swivel Becket","description":"\u003cp data-start=\"92\" data-end=\"669\"\u003eThe Selden 60 Roller Bearing Block - Single Swivel Becket (406-201-02R) is designed for high-load, dynamic applications, featuring Torlon roller bearings for superior durability. Built with machined black anodized aluminium and marine-grade stainless shaft, it swivels and can be fixed at 0° or 90°. The hollow, chamfered shaft reduces weight, and the ø6mm body and ø8mm pin optimize strength. Acetal thrust bearings stabilize the sheave under side loads. Ideal for low-friction, high-performance rigging in demanding conditions.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40620102R | Mfr. Part # 406-201-02R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348526735666,"sku":"SEL40620102R","price":226.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SELDEN_9.jpg?v=1754590195"},{"product_id":"sel40820101r","title":"Selden 80 Roller Bearing Block - Single Swivel","description":"\u003cp data-start=\"92\" data-end=\"712\"\u003eThe Selden 80 Roller Bearing Block - Single Swivel (408-201-01R) is designed for high load, dynamic applications. Made with machined black anodized aluminium and Torlon roller bearings for superior durability and performance. The marine-grade stainless shaft swivels and can be fixed at 0° or 90° with a set screw, reducing weight with a ø8mm body and ø10mm pin. Acetal thrust bearings stabilize the sheave under side loads. Part of Seldén's RBB performance range, offering low friction for optimal performance. Ideal for demanding trimming and dynamic load applications.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40820101R | Mfr. Part # 408-201-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348781506866,"sku":"SEL40820101R","price":405.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40820101R.jpg?v=1728016700"},{"product_id":"sel41000103r","title":"Selden 100 Plain Bearing Block - Single Halyard","description":"\u003cp data-start=\"92\" data-end=\"652\"\u003eThe Selden 100 Plain Bearing Block - Single Halyard (410-001-03R) is designed for up to 4-ton working load, ideal for backstays as the top block in a cascade system. Features a plain bearing with polymer bushing and two axial Delrin® thrust bearings for stability. The machined, black anodized aluminium sheave and cheeks are paired with stainless parts insulated from aluminium to prevent corrosion. Easy to dismantle for maintenance. Perfect for high-performance, high-load applications in dynamic rigging systems.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL41000103R | Mfr. Part # 410-001-03R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348806967602,"sku":"SEL41000103R","price":440.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SELDEN_6.jpg?v=1754588872"},{"product_id":"sel41000101r","title":"Selden 100 Plain Bearing Block - Single","description":"\u003cp data-start=\"92\" data-end=\"687\"\u003eThe Selden 100 Plain Bearing Block - Single (410-001-01R) is designed for up to 4-ton working load, featuring a plain bearing with polymer bushing and two axial Delrin thrust bearings for stability. It includes a machined, black anodized aluminium sheave and cheeks, with marine-grade stainless shaft that swivels or locks at 0° or 90°. All stainless parts are insulated from aluminium to prevent corrosion. The block is quick and easy to dismantle for maintenance. Ideal for high-load applications requiring reliable and durable performance.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL41000101R | Mfr. Part # 410-001-01R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348811456818,"sku":"SEL41000101R","price":445.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL41000101R.jpg?v=1728042943"},{"product_id":"sel41000102r","title":"Selden 100 Plain Bearing Block - Single Swivel Becket","description":"\u003cp data-start=\"92\" data-end=\"754\"\u003eThe Selden 100 Plain Bearing Block - Single Swivel Becket (410-001-02R) is designed for up to 4-ton working load, featuring a plain bearing with polymer bushing and two axial Delrin thrust bearings for smooth operation. The machined, black anodized aluminium sheave and cheeks offer durability, and the stainless parts are insulated from aluminium to prevent corrosion. The becket shaft is ø16mm and detachable for a spliced line. The marine-grade stainless swiveling shaft can be fixed at 0° or 90° with a set screw. Easy to dismantle for maintenance and ideal for high-load rigging applications.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL41000102R | Mfr. Part # 410-001-02R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348835115314,"sku":"SEL41000102R","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SELDEN_7.jpg?v=1754589014"},{"product_id":"sel40820103r","title":"Selden 80 Roller Bearing Block - Single Backstay\/Halyard","description":"\u003cp data-start=\"92\" data-end=\"656\"\u003eThe Selden 80 Roller Bearing Block - Single Backstay\/Halyard (408-201-03R) is designed for backstays in cascade systems or 2:1 main halyard arrangements. Made from machined black anodized aluminium and Torlon roller bearings for superior durability and performance. Acetal thrust bearings stabilize the sheave under side loads. Part of Seldén’s RBB performance range, known for low friction and high efficiency. Ideal for the trimmer, ensuring smooth, long-lasting operation. Perfect for demanding dynamic load applications.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40820103R | Mfr. Part # 408-201-03R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348860641586,"sku":"SEL40820103R","price":510.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40820103R.jpg?v=1728019422"},{"product_id":"sel40820102r","title":"Selden 80 Roller Bearing Block - Single Swivel Becket","description":"\u003cp data-start=\"92\" data-end=\"733\"\u003eThe Selden 80 Roller Bearing Block - Single Swivel Becket (408-201-02R) is designed for high load, dynamic applications. Made with machined black anodized aluminium and Torlon roller bearings, it ensures durability and performance. The marine-grade stainless shaft swivels and can be fixed at 0° or 90° with a set screw, reducing weight with a ø8mm body and ø10mm pin. Acetal thrust bearings stabilize the sheave under side loads. The becket shaft is ø8 x 18mm and fixed with M5 screws. Part of Seldén's RBB performance range, offering low friction for smooth, long-lasting operation.\u003c\/p\u003e\n\u003cp\u003eOur Part # SEL40820102R | Mfr. Part # 408-201-02R\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":49348907925810,"sku":"SEL40820102R","price":580.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/SEL40820102R.jpg?v=1728020855"},{"product_id":"selden-block-bbb20-single-strap","title":"Selden 20 mm Ball Bearing Block - Single","description":"\u003cp\u003eThe BBB20 Single Strap Block is a 20mm ball bearing block designed for lower loads. It features stainless steel strap, ball bearings and glass fiber reinforced polyamide for strength and durability. Can be attached with shackle or line. Ideal for control lines on dinghies and keelboats as well as flag line applications on yachts Safe working Load: 150 kg Breaking Load: 300 kg Max line size: 6 mm\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870172978,"sku":"SEL402-101-01R","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/402-101-01R.jpg?v=1786463755"},{"product_id":"selden-block-bbb20-single-becket","title":"Selden 20 mm Ball Bearing Block - Single, Becket","description":"\u003cp\u003eThe BBB20 Single Becket block is a 20mm ball bearing block with a becket. The block features stainless steel ball bearings for smooth rotation and a glass fiber reinforced polyamide construction for strength and durability. It can be attached with a shackle or line. Perfect for control lines on dinghies and keelboats Safe working Load: 150 kg Breaking Load: 300 kg Max line size: 6 mm\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870238514,"sku":"SEL402-101-02R","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/402-101-02R.jpg?v=1786463756"},{"product_id":"selden-block-bbb20-sing-strap-shackle","title":"Selden 20 mm Ball Bearing Block - Single, Shackle","description":"\u003cp\u003eThe BBB20 single ball bearing block with shackle is ideal for trim lines on smaller boats. Made with stainless steel ball bearings and reinforced materials for high strength and low friction Safe working Load: 150 kg Breaking Load: 300 kg Max line size: 6 mm\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870271282,"sku":"SEL402-101-09R","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/402-101-09R.jpg?v=1786463755"},{"product_id":"selden-block-bbb20-single-web","title":"Selden 20 mm Ball Bearing Block - Single, Tie-On","description":"\u003cp\u003eThe BBB20 Single Ball Bearing Tie-On Block is a 20mm block designed for control lines on dinghies and keelboats as well as leech line applications on yachts. Best way to attach it is three turns with 2 mm line Made with stainless steel ball bearings and reinforced polyamide, it is lightweight yet strong\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870304050,"sku":"SEL402-101-12R","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/402-101-12R.jpg?v=1786463755"},{"product_id":"selden-block-bbb20-single-stand-up","title":"Selden 20 mm Ball Bearing Block - Single, Lead","description":"\u003cp\u003eThe Seldén BBB20 Single Stand Up Block is a 20mm ball bearing block designed for control lines on dinghies and keelboats. Made with stainless steel ball bearings and glass fiber reinforced polyamide, it is lightweight yet strong. The block is easy to install with the included deck mounted bracket and spring\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870336818,"sku":"SEL402-101-14","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/402-101-14.jpg?v=1786463775"},{"product_id":"selden-block-bbb20-single-stand-up-1","title":"Selden 20 mm Ball Bearing Block - Single, Lead","description":"\u003cp\u003eThe Seldén BBB20 Single Stand Up Block is a 20mm ball bearing block designed for control lines on dinghies and keelboats. Made with stainless steel ball bearings and glass fiber reinforced polyamide, it is lightweight yet strong. The block is easy to install with the included deck mounted bracket and spring\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870369586,"sku":"SEL402-101-14R","price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/402-101-14R.jpg?v=1786463775"},{"product_id":"selden-block-bbb20-lead","title":"Selden 20 mm Ball Bearing Block - Single, Lead","description":"\u003cp\u003eThe Seldén BBB20 Lead Block is a 20mm ball bearing block designed for lower loads. It is easy to install on deck with 2 M4 screws. The stainless steel ball bearings provide smooth rotation with minimal friction, making it ideal for control lines on dinghies and keelboats. The glass fibre reinforced polyamide composite construction ensures strength and durability even under high dynamic loads\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870631730,"sku":"SEL402-101-16R","price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/402-101-16R.jpg?v=1786463775"},{"product_id":"selden-block-bbb20-sing-strap-holder","title":"Selden 20 mm Ball Bearing Block - Single, Strap","description":"\u003cp\u003eThe BBB20 Single Strap\/Holder block is a 20mm ball bearing block suitable for control line on dinghies and keelboats. Made with stainless steel ball bearings and glass fiber reinforced polyamide, it is lightweight yet strong. Easy to install with one M4 screw Breaking Load: 300 kg Safe working Load: 150 kg System: BBB20 Max line size: 6 mm Mounting: 1x M4\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870697266,"sku":"SEL402-101-20R","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/402-101-20R.jpg?v=1786463775"},{"product_id":"selden-block-bbb30-single-strap","title":"Selden 30 mm Ball Bearing Block - Single Strap","description":"\u003cp\u003eThe BBB30 Single Strap Block is a 30mm ball bearing block with a stainless attachment strap The block features stainless steel ball bearings for strength and smooth rotation and glass fiber reinforced polyamide sheave and cheeks. Acetal bearing cage to prevent ball-to-ball friction and to reduce weight. The center hole can be used as a becket. Ideal for moderate and dynamic loads with minimal friction\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":51564870861106,"sku":"SEL403-101-02R","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/403-101-02R.jpg?v=1786463775"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/Selden-Deck-Hardware-Dimensioning-Guide-Cover.png?v=1792517240","url":"https:\/\/www.mauripro.com\/collections\/selection-guides-selden-deck-hardware-dimensioning-guide.oembed?page=3","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}