A lightweight, simple and efficient solution for fixed rope acsents, the Croll is equipped with a chrome-plated steel cam with angled teeth and a self-cleaning slot to securely grip the rope, even in muddy or icy conditions. The ergonomic trigger allows one-handed installation and removal when you are switching out to rapell and the angled attahcment hole keeps the device properly aligned on the chest for better efficiency. The upper hole is used to attach shoulder strap and the safety catch prevents the cam from opening too far, thus helping to keep the rope captured for added safety. Best when used with the Ascension or Basic rope clamps and Top Chest Harness