The Leatherman Z-Rex is a first responder instrument that includes 4 tools in one lightweight and intuitive device. A tungsten carbide glass breaking tip is located in the bottom of the molded finger grip handle as well as a 440C stainless steel, corrosion resistant, replaceable, indexed V-notch cutter that can be flipped around for a fresh cutting edge. The Z-Rex also features oxygen tank and hex wrenches built into the body of the tool. Weight: 1.6 oz, length: 6.6”.