Pipe and water pump pliers in one tool, self-locking on pipes and nuts: no slipping on the workpiece, energy-saving work, quick, precise adjustment directly on the workpiece, no unintentional adjustment, no slipping of the joint, fine adjustment, optimal leverage, can be used as a wrench in many situations , Gripping surfaces with specially hardened teeth, hardness of the teeth approx. 61 HRC: permanently secure gripping thanks to high wear resistance, chrome-vanadium electric steel, forged, multi-stage oil-hardened