Lewmar 50mm Single Synchro Block SCHAEFER CHEEK BLOCKS includes urethane base: 3 3/8

includes urethane base: 3 3/8 in

color coded rope cut to the perfect length for the entire boat

Delrin(tm) sheaves on plain bearings ensure smooth operation and high safe working load

ideal for changing sheet winch

Lewmar 50mm Single Synchro Block SCHAEFER CHEEK BLOCKS includes urethane base: 3 3/8Product Description Lewmar 50mm Single Synchro Block Lewmar's Synchro Blocks are engineered for speed, efficiency and superior handling. We use a combination of scientifically optimized block geometry, a Free Spin bearing and self aligning head to reduce friction and increase efficiency by up to 40%, over budget blocks on mainsheet systems. Each component is perfectly synchronized with the movement of the rope, providing you with an easier, smoother