Petzl RAY 12mm Fall Arrest Rope

The Petzl RAY 12mm is a low-stretch kernmantle rope made for fall arrest backup lines, where it runs through a mobile fall arrester. Arborists and rope access workers use it as the safety line in two-rope systems.

Where the RAY fits

In two-rope work, one line carries the climber and the second is a backup that catches a fall if the main line or anchor fails. The RAY is built for that backup role: a 12 mm low-stretch rope that works with mobile fall arresters such as the Petzl ASAP, which follow you up and down the line and lock if you fall.

In tree work it shows up on removals with a second tie-in, in utility and rope access, and on crews that run formal two-rope systems.

Matching the system

Fall arrest systems are tested as a set. Use the RAY with the devices Petzl lists as compatible for that diameter, and follow their instructions for anchors, terminations and clearance. Fall arrest work requires training and gear that meets the applicable standard.

Inspect before every use, keep it out of chainsaw reach and away from chemicals, and retire it after a significant fall or damage. Compare other static climbing rope.

The RAY is often sold in set lengths, sometimes with a sewn termination on one end. Choose a length that reaches the ground from your highest anchor with extra to spare, and mark or tag each rope so you can track its history and age.