Description
Harken 57 mm Ratchamatic Block – Swivel, Cam Cleat
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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. Unloaded main and jib sheets run out freely during mark rounding and asymmetrical spinnakers free instantly during jibes.
Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style. The holding power of the 57mm bocks are up to 10:1.
| Imperial | Metric | |
| Sheave Diameter | 2 1/4 in | 57 mm |
| Max Line Diameter | 3/8 in | 10 mm |
| Max Working Load | 300 lb | 136 kg |
Additional information
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