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)
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