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)
74 mm

Length (in)
2 29/32 in

Weight (g)
139 g

Weight (oz)
4.9 oz

Maximum line Ø (mm)
10 mm

Maximum line Ø (in)
3/8 in

Mounting hole spacing (mm)
63 mm

Mounting hole spacing (in)
2 1/2 in

Maximum working load (kg)
220 kg

Maximum working load (lb)
485 lb

Breaking load (kg)
735 kg

Breaking load (lb)
1620 lb