Petzl RIG Descender

The Petzl RIG is a compact self-braking descender for work positioning and descent on a single rope. Used widely in rope access, it also shows up in tree crew rescue kits and some single-rope setups.

How the RIG works

The rope runs around a cam. Squeeze the handle to release and descend, and let go to stop. The hinged side plate lets you load the rope without unclipping the device from your harness.

For tree work, the RIG suits rescue and some SRS descents, but check rope diameter first. Many arborist climbing ropes are larger than its range. Compare devices in ascent and descent.

The RIG is light enough to carry as a backup descender on a big climb. Some crews keep one in an aerial rescue kit for fast descents with a casualty when the rope is in range.

Training and inspection

Life-support gear must meet the applicable standard (ANSI Z133 and the manufacturer's instructions), be inspected before every use, and be used only by trained climbers. Self-braking devices still need a brake hand on the rope.

Inspect the cam, handle, side plate and wear surfaces, and look for grooves worn by rope. Follow Petzl's inspection procedure and keep records.

Learn how to lock off the RIG and how to control a fast descent before you rely on it. Keep the device clean and dry, and store it away from chemicals and sharp hardware that could damage wear surfaces.