Harken 45mm Aluminum Double Block Swivel Special Order Works on open body turnbuckles

Works on open body turnbuckles and Johnson's positive locking

Attersee and Neusiedler Sea

Quick and simple

Weight:121g

Harken 45mm Aluminum Double Block Swivel Special Order Works on open body turnbucklesBlack Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting. Torlon is a registered trademark of Solvay