Lewmar 50mm Fiddle & Cam Synchro Block Ronstan Thimbles Ronstan Series 40 Single Block

Ronstan Series 40 Single Block

Ronstan Series 200 Snap Shackle w/ Large Swivel Bail

969") centers

Schaefer 1 7/16" Delrin Sheave

Large base disc for positive orientation every time

Lewmar 50mm Fiddle & Cam Synchro Block Ronstan Thimbles Ronstan Series 40 Single BlockProduct Description Lewmar 50mm Fiddle & Cam 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,