Protection devices

Protection devices

Protection devices, collectively known as rock protection or pro, provide the means to place temporary anchor points on the rock. These devices may be categorized as passive (nuts, Hexentrics, etc.) or active (SLCDs).
Typical nuts and a nut tool

Nuts

Nuts are manufactured in many different varieties. In their simplest form, they are just a small block of metal attached to a loop of cord or wire. The most popular styles are tapers and Hexentrics. They are sometimes referred to by the slang term, wires.

Nuts are used by simply wedging them into narrowing cracks in the rock, then giving them a tug to set them.
Black Diamond Hexcentrics