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57 mm Quad Block — Swivel 57 mm Quad Block — Swivel 57 mm Quad Block — Swivel
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57 mm Quad Block — Swivel

Part No. 2631
$175.05  In Stock
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 AirBlocks® are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, 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
Shackle pin Ø (mm)6 mm
Shackle pin Ø (in)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
Breaking load (kg)2270 kg
Breaking load (lb)5000 lb
Manual: 4448.pdf (open/save)
Manual: Carbo U-Lock Manual: 4875.pdf (open/save)
DWG: 2631.dwg (open/save)
DXF: 2631.dxf (open/save)
IGS: 2631.igs (open/save)
EPS: 2631.eps (open/save)
High-res JPG: 2631.jpg (open/save)

DO NOT use Harken Equipment for Human suspension.

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