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57mm Quad Block — Swivel, Center Becket

57mm Quad Block — Swivel, Center Becket

Part No. HSB380

Sheave Ø (mm) 57 mm

Sheave Ø (in) 2 1/4 in

Maximum line Ø (mm) 10 mm

Maximum line Ø (in) 7/16 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)143 mm
Length (in)5 5/8 in
Width (mm)92 mm
Width (in)3 5/8 in
Weight (g)453.6 g
Weight (oz)16 oz
Maximum line Ø (mm)10 mm
Maximum line Ø (in) 7/16 in
Maximum working load (kg)1080 kg
Maximum working load (lb)2380 lb
Shackle pin Ø (mm)6 mm
Shackle pin Ø (in)1/4 in

Harken US Offices will be closed for Memorial Day. Any orders placed after 1pm on Friday May 27th will be processed Tuesday May 31st when offices reopen.

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