Spring-loaded camming devices are active pieces of rock climbing equipment designed for parallel or flared cracks. It consists of lobes mounted on an axle and stem, which expands to create an outward force on the rock. The first modern camming device invented is the Wild Country Friends, which still remains hugely popular today. Other full-sized climbing cam sets include Black Diamond C4 Camalots, Black Diamond Ultralight Cams, Totem Cams, and Metolius Ultralight Master Cams. We also have an extensive range of small and micro cams in kits or singles for Wild Country Zero Friends, Black Diamond Z4 Camalots, and FIXE Alien Revolution Cams.
You can find a cam size comparison chart in our How to Build your First Trad Rack guide.