Harken 57mm Aluminum Loop Block Gifts Ideas Cutout (in)13/32 x 1 17/32

Cutout (in)13/32 x 1 17/32 in

Length (in)5 1/2 in

Outer groove width (mm)20 mm

Width (in)7/8 in

Sheave Ø (in)2 in

Harken 57mm Aluminum Loop Block Gifts Ideas Cutout (in)13/32 x 1 17/32Part No. 3214 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. The sheave center carries primary load, allowing a smaller, lighter weight block. The soft attachment Loop block