HARKEN CARBO BLOCK DOUBLE SWIVEL 57MM
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block 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)
178 g
Weight (oz)
6.3 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