Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action.

Sideplates and sheaves Hard Lube-anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon® roller bearings separated and parallel to reduce friction.

Sheave Ø (mm)
100 mm

Sheave Ø (in)
3 15/16 in

Length (mm)
195 mm

Length (in)
7 11/16 in

Weight (g)
884 g

Weight (oz)
31.18 oz

Maximum line Ø (mm)
16 mm

Maximum line Ø (in)
5/8 in

Maximum working load (kg)
3402 kg

Maximum working load (lb)
7500 lb

Breaking load (kg)
6804 kg

Breaking load (lb)
15000 lb

A (mm)
93 mm

A (in)
3 21/32 in

B (mm)
97 mm

B (in)
3 27/32 in

C (mm)
59 mm

C (in)
2 5/16 in