Climbing Technology Anchor Cams are a highly resistant cam for trad climbing and mountaineering and work expertly on granite and limestone. They come in 8 sizes and are made from lightweight anodised, hot-forged aluminium. These cams are extremely durable, with a single axle and flexible stem. Plus the webbing strips and cams are colour coded for easy identification which helps when fumbling about on the rock face looking for the right size!