57mm Double Block — Swivel, Becket

Part No. 2603

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) 720 kg

Maximum working load (lb) 1584 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 Resources

Sheave Ø (mm)	57 mm
Sheave Ø (in)	2 1/4 in
Length (mm)	142 mm
Length (in)	5 5/8 in
Weight (g)	187 g
Weight (oz)	6.6 oz
Shackle pin Ø (mm)	6 mm
Shackle pin Ø (in)	1/4 in
Maximum line Ø (mm)	10 mm
Maximum line Ø (in)	3/8 in
Maximum working load (kg)	720 kg
Maximum working load (lb)	1584 lb
Breaking load (kg)	1500 kg
Breaking load (lb)	3300 lb