Harken Carbo Block 57mm Single Swivel Ratchamatic*2.0

Harken Carbo 57mm Single Ratchamatic Swivel Block 20:1

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® 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.

2x grip: big breeze/steady: 20:1 holding power.