The Petzl Ring Open gated-ring is designed for semi-permanent connection of equipment on the harness (lanyard for example). Its round shape ensures optimal functioning in all directions. The Petzl Ring Open has a wide opening that allows installation of ropes with sewn terminations. Can be retro-fitted to older style Petzl SEQUOIA work positioning harnesses if you want to fit a rope bridge instead of the webbing version. The 3mm HEX 'pin' is secured in place with a rubber O-ring so no need for Loctite.