Forrest Mountaineering P-Nuts

First released in 1982 this chock concept was designed to be simple, clean, and functional. The idea was to remove everything possible and leave only the wire and jamming surface. P-nuts met with limited success.

P-nuts were available in 4 sizes: 1/2″, 3/4″, 1″, 1 1/4″ and were made out of 4130 steel