Harken 57mm Aluminum Low Load Black Magic Block w/Swivel [3226] Marine Navigation & Instruments | Instruments Big Output

Big Output

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Removal: High pressure

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23" (6 mm)

Harken 57mm Aluminum Low Load Black Magic Block w/Swivel [3226] Marine Navigation & Instruments | Instruments Big Output57mm Aluminum Low Load Black Magic Block with Swivel Black 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 the line from