45mm Single Aluminum Black Magic® AirBlocks® - 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 line from twisting.
Mfg No. 3391
Sheave Diameter 1-3/4" (45mm)
Shackle Pin Diameter 3/16" (5mm)
Length 3-15/16" (100mm)
Max Line Diameter 3/8" (10mm)
Max Working Load 1653 Lbs (750kg)
Breaking Load 3306 Lbs (1500kg)
Weight 2.79 oz. (79g)
Sold individually