Harken 57 mm Ratchamatic® Carbo Air® Block — Swivel, 2x Grip

Harken Stock Currently Available: 5

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.


  • Breaking load (kg) 907
  • Length (mm) 103
  • Maximum line Ø (mm) 10
  • Maximum working load (kg) 227
  • Shackle pin Ø (mm) 5
  • Sheave Ø (mm) 57
  • Weight (g) 104

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