Harken 57 mm Triple Carbo Ratchamatic Block – Swivel, Cam Cleat, 40 mm 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.
| Imperial | Metric | |
| Sheave Diameter | 2 1/4 in | 57 mm |
| Max Line Diameter | 3/8 in | 10 mm |
| Max Working Load | 1800 lb | 816 kg |
