The Harken 2168 57mm Ratchamatic Swivel Block provides 2x grip for big-breeze, steady conditions, with 20:1 holding power.

Harken’s Power3 ratchet block range gives small one-design racers three holding-power options for different wind and sea conditions. Sailors can fine-tune their setups in tandem with the purchase to achieve the desired power, responsiveness and grip.

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