3391 45 mm Aluminum Block — Swivel
3391 45 mm Aluminum Block — Swivel
$235.75
Maximum working load (kg) 750 kg
Maximum working load (lb) 1653 lb
Maximum line Ø (mm) 10 mm
Maximum line Ø (in) 3/8 in
Sheave Ø (mm) 45 mm
Sheave Ø (in) 1 3/4 in
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.
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