Each of Lewmar Synchro blocks' three sheave diameters is engineered for speed, efficiency, and superior handling. Choose from 50 mm, 60 mm, or 72 mm diameters.
Lewmar uses a combination of scientifically optimized block geometry, a Free-Spin bearing and a unique 30°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 transfer of power from deck to sail and less wear on your rope.
Improve your sailing setup with the Lewmar 50mm Fiddle Block, which features cutting-edge self-lubricating bearings and swivel lock technology for smooth operation.
Toggle heads are designed to fit on the studs commonly found at the mast base. Check the diameter of the stud against the width of the block jaws and pin diameter.
Lewmar Synchro blocks feature a free-spin bearing and self-aligning head to reduce friction and increase efficiency by up to 40% over budget blocks on mainsheet systems.
Toggle heads are designed to fit on the studs commonly found at the mast base. Check the stud's diameter against the block jaws' width and pin diameter. The block has an optimum line size of 3/8" but accepts lines up to 1/2" in diameter.
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CATEGORY: Lewmar Synchro Blocks 
