Lewmar 50mm Double Synchro Block Accessories Zuma Drum Diameter (in) - 3

Drum Diameter (in) - 3 7/16

(in) - 9/16

Lewmar DC1 Double Rope Clutch 6-8mm

cunningham and trapeze retriever systems on dinghies

Full front zipper with double storm flap

Lewmar 50mm Double Synchro Block Accessories Zuma Drum Diameter (in) - 3Product Description Lewmar 50mm Double 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