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)
40 mm

Sheave Ø (in)
1 9/16 in

Length (mm)
110 mm

Length (in)
4.3125 in

Weight (g)
90 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)
440 kg

Maximum working load (lb)
970 lb

Breaking load (kg)
1080 kg

Breaking load (lb)
2380 lb