Harken 57mm Wide Black Magic Loop Block
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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.
Maximum line Ø (mm) 12 mm
Maximum line Ø (in) 7/16 in
Sheave Ø (mm) 63 mm
Sheave Ø (in) 2 1/4 in
Length (mm) 88 mm
Length (in) 3 4/10 in
Width (mm) 35 mm
Width (in) 1 3/8 in
Weight (g) 181.3 g
Weight (oz) 6.4 oz
Maximum working load (kg) 1134 kg
Maximum working load (lb) 2500 lb
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