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

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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.

Specifications

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
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