Adjustment at the touch of a button directly on the workpiece Fine adjustment for optimum adaptation to different size workpieces and a comfortable gripping position Self-locking on pipes and nuts: no slipping off the workpiece and low handforce required Gripping surfaces with special hardened teeth, teeth hardness (approx. 61 HRC): low wear and reliable gripping Box-joint design: high stability because of double guide Reliable catching of the hinge bolt: no unintentional shifting Pinch guard prevents operators' fingers being pinched 11 adjustment positions Chrome vanadium electric steel; forged, multi-stage oil-hardened