Part No 344

Sheave Ø (mm) 29 mm

Sheave Ø (in) 1 1/8 in

Maximum line Ø (mm) 8 mm

Maximum line Ø (in) 5/16 in

Maximum working load (kg) 449 kg

Maximum working load (lb) 990 lb

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.