Lewmar 50mm Synchro Snap Shackle

The Lewmar 50mm Synchro Snap Shackle converts standard fixed shackles on existing rigging blocks into quick-connect snap shackles, delivering enhanced versatility without replacing your entire assembly. Engineered for marine and industrial applications where rapid equipment swaps are essential, this precision-built component allows users to upgrade their rigging systems incrementally. Whether you're retrofitting a boat's sail system or reconfiguring mechanical blocks on machinery, the Lewmar Synchro design maintains the integrity and load-bearing capacity of your original hardware while adding modern snap-lock convenience.

Built with Lewmar's signature synchronized snap mechanism, this 50mm shackle features highly engineered internal geometry that ensures smooth, positive engagement and reliable one-handed operation under load. The compact 2 x 1 x 2-inch profile and minimal 0.2 lbs weight make it ideal for weight-sensitive applications where every ounce matters. The synchro design synchronizes pin engagement across the shackle body, eliminating binding and reducing wear—critical when you're cycling snap shackles repeatedly or operating under dynamic tension.

Mechanics and rigging professionals benefit most from this upgrade when servicing blocks that see frequent line or hardware changes. Installation is straightforward—remove the existing pin shackle and replace it with the Lewmar 50mm Synchro unit. Compatibility depends on matching the shackle's 50mm opening to your existing block's attachment point, making it essential to verify dimensions before purchase. Users upgrading sail systems, crane rigging, or portable lifting equipment will appreciate the reduced downtime and increased operational flexibility this snap shackle delivers.