Can wrenches feature color-coded socket ends and built-in ribs on the barrel for user comfort, safety, and greater torque power. The two hex head sockets (7/16 inch and 3/8 inch) have reduced outside diameters that fit all new network interface devices. The 7/16 inch is black oxidized to easily distinguish it from the 3/8 inch zinc-plated socket end. Separate models of the can wrench are available with wire strippers built into the barrel. The stripper head has two slots with one slot for the outside jacket of a 4-wire "quad", and the other slot for individual conductors (22-gauge model or 24-gauge model).