Knipex Cobra Water Pump Pliers Available in 125mm, 150mm, 180mm, 250mm, 300mm and 400mm (XL) Lengths KNIPEX Cobra® - the Hightech Water Pump Pliers. No more time-consuming presetting of the required opening size. Just position the upper jaw to the workpiece, push button and move close the lower jaw, ingeniously simple. The KNIPEX Cobra® XL offers the performance and comfort of water pump pliers while being lighter in weight and having a greater gripping capacity than comparable pipe wrenches. Greater gripping capacity but much lower weight than comparable pipe wrenches Fast push-button adjustment directly on the workpiece, no unintentional slipping of the joint Fine adjustment for optimum adaptation to different sizes of workpieces and a comfortable handle width Self-locking on pipes and nuts: no slipping on the workpiece and low handforce required Reliable catching of the hinge bolt: no unintentional shifting Gripping surfaces with special hardened teeth, teeth hardness approx. 61 HRC: high wear resistance and stable gripping Box-joint design for high stability due to double guide Guard prevents operators’ fingers being pinched Chrome vanadium electric steel, forged, multi stage oil-hardened