Old Style Harken Black Magic Airblock. Available only while stocks last.
These strong, lightweight blocks feature free-rolling high-load Torlon® roller bearings for a high strength-to weight ratio.

Like all Black Magic blocks, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single hex wrench.

Sheave Ø (mm)
150 mm

Sheave Ø (in)
5 15/16 in

Length (mm)
305 mm

Length (in)
12 in

Width (mm)
153 mm

Width (in)
6 1/32 in

Weight (g)
1840 g

Weight (oz)
64.9 oz

Shackle pin Ø (mm)
16 mm

Shackle pin Ø (in)
5/8 in

Maximum line Ø (mm)
25 mm

Maximum line Ø (in)
1 in

Maximum working load (kg)
6802 kg

Maximum working load (lb)
15000 lb

Breaking load (kg)
13605 kg

Breaking load (lb)
30000 lb