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.
The head post lock mechanism enables a 30° float to ensure proper block alignment. The larger sheave diameter minimizes rope friction, and a high-density free-spin bearing reduces axle diameter for superior efficiency
Combines with a Synchro 72mm Double Block 29927202BK or the Synchro 72mm Fiddle Block 29927231BK to create a 4:1 purchase system with a 2,420-pound safe working load.
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CATEGORY: Lewmar Synchro Blocks 
