Choice of carabiner for the ZIGZAG

Written By: Lance Piatt

Key issues and risks

The ZIGZAG is used alone, without a backup belay system; the locking system must be as secure as possible. In tree care, it is recommended (or required, depending on the country) to use triple-action locking systems.

When the rope is taut, the carabiner and the device are held in position by the tension. But when the rope is slack, the device and its carabiner can move about and become poorly positioned. So there is a risk of rubbing on the sleeve, or of cantilever loading between the device and the harness attachment point.


The most important risks to consider





The asymmetry of the D shape allows for good load distribution and helps resist carabiner rotation.


  • The harness attachment carabiner can stay attached to the ZIGZAG with the CAPTIV bar.
  • The CAPTIV bar helps reduce poor positioning of the carabiner, and rubbing on the locking sleeve.

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Peace on your Days



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