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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
four snap-hook tethers
Line Size: 5/16" - 3/8"
Includes 5 sheets
Hose Connections: 19 mm (¾") / 25 (1") Stepped port
32 VDC systems
Harken 57mm Aluminum Loop Block SOFTWARE|DIGITAL CHARTS four snap-hook tethersBlack 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. The sheave center carries primary load, allowing a smaller, lighter weight block. The soft attachment Loop block has a
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