Ronstan Series 55 Ratchet Orbit Block

2 items left

Ronstan Series 55 Ratchet Orbit Block with Dyneema Loop

The Ronstan Series 55 orbit ratchet block is an automatic ratchet block with a fantastic holding power.

This version comes with a dyneema link which allows you to easily fit and retain your block securely.


  • Up to 20:1 holding power
  • Smooth easing of sheets
  • High performance cleating
  • Easily fitted and securely retained Dyneema® Link head
  • Automatic & manual ratchet block


  • Sheave - 55mm
  • Max Rope - 10mm
  • Max Working Load - 250kg
  • Breaking Load - 750kg
  • Weight - 78grams

Instant Savings