This Harken Carbo Ratchamatic 57 mm single block with Cam-Matic is an automatic ratchet block for sailing, where the line needs to run freely under low loads and provide extra holding power under higher loads.
The block automatically engages the ratchet function when the load increases, thus providing more control without restricting the free running of unloaded lines.
The load sensor can be adjusted as needed, allowing the block to be adapted to sail trim, boat type, and personal preference.
Key features
Automatic load-sensing ratchet function
Free running in both directions under low loads
Adjustable load sensor
8-sided Hardkote-anodized and Teflon-impregnated sheave
Holding power of 10:1
