Harken Aluminum Stand-Up Block - 57mm Strainers cardboard or plastic

cardboard or plastic

Includes 1 fuse

Loos Seizing Wire 3/64

The measurements for the BOND cutlass bearing are Shaft Size: 1-3/8 inches Outside Diameter: 2-1/8 inches Length: 5-1/2 inches

Accept standard thru-hulls into the base and standard in-line valves on top

Harken Aluminum Stand-Up Block - 57mm Strainers cardboard or plasticBlack 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. Sideplates and sheaves Hard Lube anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon roller bearings separated and parallel to reduce friction.