Harken 57 mm Triple Ratchamatic® Carbo Air® Block — Swivel, Cam Cleat, 40 mm Block

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.


  • Breaking load (kg) 2041
  • Length (mm) 156
  • Maximum line Ø (mm) 10
  • Maximum working load (kg) 816
  • Shackle pin Ø (mm) 6
  • Sheave Ø (mm) 57
  • Weight (g) 520

Stay in touch