- Class leading performance and sleek, contemporary styling
- Excellent dynamic and high static load performance
- Less than half the friction of the nearest competitor
- **Total block load. Maximum load on top sheave not to exceed 50% of total block load
- Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 14m (46ft).
- Various control line applications on larger yachts.
- Alloy sheave models are available for use with wire.
- Sheave: U.V. stabilised Acetal or anodised aluminium (AW models)
- Cheek plates: Aluminium alloy
- Ball Bearings: High compression strength carbon black Acetal.
Part Number: RF74251
Core 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.