Harken Black Magic Block with Swivel - 100 mm (3 15/16") - 3246

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.

Specifications:

• Sheave Diameter: 100 mm (3 15/16")
• Length: 203 mm (8")
• Weight: 623 g (21.98 oz)
• Shackle Pin Diameter: 10 mm (3/8")
• Maximum Line Diameter: 16 mm (5/8")
• Maximum Working Load: 3402 kg (7500 lbs)
• Breaking Load: 6804 kg (15000 lbs)

Owner's Manual (4.80 MB)