Push the button for adjustment on the workpiece|Fine adjustment for optimum adaptation to different sizes of workpieces and a comfortable handle width|Self-locking on pipes and nuts has no slipping on the workpiece and low handforce required|Gripping surfaces with special hardened teeth, teeth hardness approximately 61 HRC, high wear resistance and stable gripping|Box joint design for high stability due to double guide|Reliable catching of the hinge bolt has no unintentional shifting|Guard prevents operators fingers being pinched|Chrome vanadium electric steel, forged, multi-stage oil hardened|No more time consuming presetting of the required opening size just position the upper jaw to the workpiece, pushbutton and move close the lower jaw, ingeniously simple|Teeth set against the direction of rotation have a self-locking effect and prevent slipping on the workpiece|Gray atramentized pliers, polished head|No more time consuming presetting of the required opening size|Just position the upper jaw to the workpiece, pushbutton and move close the lower jaw, ingeniously simple|Two color dual component handles