Cobra Pliers. Adjustment at the touch of a button directly on the workpiece. 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. Gripping surfaces with special hardened teeth, teeth hardness approx. 61 HRC: low wear and stable gripping. Box-joint design: high stability because of double guide. Reliable catching of the hinge bolt: no unintentional shifting. Guard prevents operators" fingers being pinched. Chrome vanadium electric steel, forged, oil-hardened.