Series 55 Orbit BB Double Block with Becket, Swivel Mount

Series 40 Ball Bearing Blocks are suitable for sheet applications on dinghies, sportboats and small one-design keelboats, and for control lines on larger boats. They feature a precision two-stage bearing system for better durability, lighter weight and low-friction performance. Models with swivels feature stainless steel shackles.

• Sheave: Carbon fiber reinforced, PTFE impregnated engineered nylon
• Ball bearings: High-compression-strength carbon black acetal; Stage 2 bearing: Glass-fiber-reinforced MoS2 impregnated engineered nylon
• Cheek material/finish: Toughened glass-fiber-reinforced nylon