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)
132 mm

Length (in)
5 3/16 in

Weight (g)
96 g

Weight (oz)
3.4 oz

Shackle pin Ø (mm)
5 mm

Shackle pin Ø (in)
3/16 in

Maximum line Ø (mm)
10 mm

Maximum line Ø (in)
3/8 in

Maximum working load (kg)
359 kg

Maximum working load (lb)
792 lb

Breaking load (kg)
1079 kg

Breaking load (lb)
2380 lb