Ideal for frequent changeovers to workpieces of different sizes. Automatic adjustment for one-hand operation both for right-handed and left-handed use. Good access to the workpiece due to the slim dimensions in the head and joint area and flush joint bolt. Self-locking on pipes and nuts: no clipping off the workpiece and low hand force 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. Pinch guard prevents operators' fingers being pinched. Locking lever for space saving transport with reliable closed handles. Chrome vanadium electric steel; forged, multi stage oil-hardened.