Harken 57mm Black Magic Block - Double - Swivel - Becket

Harken 57mm Black Magic Block - Double - Swivel - Becket

£404.54
/
Tax included.

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.

Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.

Technical Information:

Sheave: 57 mm (2 1/4 in)
Length: 152 mm (6 in)
Weight: 352 g (12.43 oz)
Shackle Pin: 8 mm (5/16 in)
Maximum Line: 12 mm (7/16 in)
Maximum Working Load: 1633 kg (3600 lb)
Breaking Load: 3267 Kg (7200 lb)

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