for US Continental orders over $99
Harken 57mm Black Magic Block - Single / Swivel / Low-Load / Becket
Our Part #: HAR3229 | Mfr. Part #: 3229
Sheave: 57 mm (2 1/4 in)
Length: 140 mm (5 1/2 in)
Weight: 169 g (5.95 oz)
Shackle Pin: 6 mm (1/4 in)
Maximum Line: 12 mm (7/16 in)
Maximum Working Load: 750 kg (1655 lb)
Breaking Load: 1500 Kg (3300 lb)
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.
Low-load blocks have red isolators. They use Torlon® rollers and 316 stainless steel shackles. Standard blocks have 17-4 PH stainless headposts.
Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.