HARKEN 100 mm Aluminum Black Magic Block - Swivel, Becket, 3247 Item Type_Accessories fold the Valise shut and

fold the Valise shut and tighten two captive assembly screws

The load-sensing ratchet block rolls freely in both directions under low loads and then engages the ratchet automatically as loads increase

and then engages the ratchet automatically as loads increase

the rivet can be used as a becket

Keep a winch handle ready and near when you need it

HARKEN 100 mm Aluminum Black Magic Block - Swivel, Becket, 3247 Item Type_Accessories fold the Valise shut andBlack 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. Offered in 57 150 mm sizes, with low load versions in 57 and 75 mm ranges. A center cage keeps Torlon roller bearings separated and parallel to reduce friction. The sheave center carries the primary load,