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)
75 mm

Sheave Ø (in)
2 15/16 in

Length (mm)
189 mm

Length (in)
7 7/16 in

Weight (g)
443 g

Weight (oz)
15.6 oz

Shackle pin Ø (mm)
6 mm

Shackle pin Ø (in)
1/4 in

Maximum line Ø (mm)
12 mm

Maximum line Ø (in)
1/2 in

Maximum working load (kg)
550 kg

Maximum working load (lb)
1212 lb

Breaking load (kg)
1650 kg

Breaking load (lb)
3637 lb

Maximum working loads and breaking loads for blocks based on cam strengths.