Harken 57mm Aluminum Triple Block — Swivel

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. Sheave Ø (mm) 57 mm
Sheave Ø (in) 2 1/4 in
Length (mm) 132 mm
Length (in) 5 3/16 in
Weight (g) 378 g
Weight (oz) 13.34 oz
Shackle pin Ø (mm) 8 mm
Shackle pin Ø (in) 5/16 in
Maximum line Ø (mm) 12 mm
Maximum line Ø (in) 7/16 in
Maximum working load (kg) 2200 kg
Maximum working load (lb) 4850 lb
Breaking load (kg) 4400 kg
Breaking load (lb) 9700 lb
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Marca	HARKEN
SKU	3219
GTIN	097653264613

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