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![Harken 57mm Aluminum Low Load Black Magic Block w/Swivel [3226] Marine Navigation & Instruments | GPS - Track Plotter Box Dimensions: 8](https://cdn.shopify.com/s/files/1/0513/2618/9750/products/93959XL.jpg?v=1648509723)
Box Dimensions: 8"H x 13"W x 42"L WT: 21
Stainless Steel Type 316 collars and rings
Extended Motor Life
construction and military equipment
Harken 57mm Aluminum Low Load Black Magic Block w/Swivel [3226] Marine Navigation & Instruments | GPS - Track Plotter Box Dimensions: 8"H x 13"W57mm 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
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