
The Harken 57mm Ratchamatic® Block Red Sheeve 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)103 mm
Weight (g)104 g
Shackle pin Ø (mm)5 mm
Maximum line Ø (mm)10 mm
Maximum working load (kg)227 kg
Breaking load (kg)907 kg
Holding power10:1
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