• 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 • 30 adjustment positions • Chrome vanadium electric steel; forged, multi-stage oil-hardened