57MM CARBO CHEEK BLOCKS

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.

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Glass reinforced nylon body with aluminuim sheave creates a tough but lightweight block.

The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless.

Sheave Ø (mm)
57 mm

Length (mm)
92 mm

Weight (g)
68 g

Maximum line Ø (mm)
10 mm

Maximum working load (kg)
359 kg, 227 kg

Breaking load (kg)
1079 kg, 907 kg, 

Footnote
Includes fasteners and mounting pad.