These Cobra Water Pump Pliers are part of a range of hand tools from Knipex designed for use on water pipes. These pliers save the time-consuming need to preset the required opening size. Just position the upper jaw to the workpiece, push button and close the lower jaw. It's that simple. The anti-pinching protection protects your hands from injury. These pliers are made of oil-hardened chromium-vanadium electric steel for the toughest jobs, and are fitted with a non-slip grip cover. Jaw opening 36mm. Overall length: 180mm. Adjustment at the touch of a button directly on the workpiece. Fine adjustment for optimum adaptation to different sizes of workpieces and a comfort.