Lewmar 50mm Synchro Block w/BecketThe Lewmar Synchro block with becket is scientifically optimized to help increase speed, efficiency, and handling. A stainless steel strap increases the blocks strength for a longer service life. The Free-Spin bearing with the self-aligning head helps increase efficiency up to 40% by reducing friction. To help prevent line wedging the cheeks are reinforced with stiff fibre glass. Perfectly synchronized to provide an easy smother movement of rope for less wear on your and your rope.Features: Stiff glass fibre reinforcement; Stainless Steel Strap; Swivel Shackle; Non-ratcheting; Single becket; Specifications: Working load limit: 990 lbs; Weight Limit: 2.85 oz;