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57mm Quad Block — Swivel

Part No. 2631

Sheave Ø (mm) 57 mm

Sheave Ø (in) 2 1/4 in

Maximum line Ø (mm) 10 mm

Maximum line Ø (in) 3/8 in

Maximum working load (kg) 1080 kg

Maximum working load (lb) 2380 lb

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.
Sheave Ø (mm)57 mm
Sheave Ø (in)2 1/4 in
Length (mm)121 mm
Length (in)4 3/4 in
Weight (g)340 g
Weight (oz)12 oz
Maximum line Ø (mm)10 mm
Maximum line Ø (in)3/8 in
Maximum working load (kg)1080 kg
Maximum working load (lb)2380 lb
Breaking load (kg)2270 kg
Breaking load (lb)5000 lb
Shackle pin Ø (mm)6 mm
Shackle pin Ø (in)1/4 in

Harken US Offices will be closed Thursday November 24th & Friday November 25th. Any orders placed after 12pm CST Wednesday November 23rd will be processed upon re-opening on Monday November 28th.

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