Harken 2165 57 mm Ratchamatic Block with swivel. Maximum line: 3/8". Maximum working load: 500 lbs. Power3 ratchet blocks provide sailors that race small one-designs with three holding-power options to handle a variety of wind and sea conditions. More choices allow sailors to fine-tune their set-ups in tandem with the purchase that provides the ideal level of power, responsiveness and grip.

The Carbo Ratchamatic(R) 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.

1.5x grip: breeze-on/puffs; 15:1 holding power.