Harken 57mm Aluminum Loop Block Gifts Ideas These multipurpose blocks are a

These multipurpose blocks are a must on racing yachts of all sizes

yet allow sailors to ease and trim quickly and with complete control

Mounting hole spacing (in)2 15/16 in

Height above cam (mm)23 mm

Harken 57mm Aluminum Loop Block Gifts Ideas These multipurpose blocks are aPart 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