[Features] ・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: no slipping on the workpiece and low handforce required ・Gripping surfaces with special hardened teeth, teeth hardness approx. 61 HRC: high wear resistance and stable gripping ・Box-joint design for high stability due to double guide ・Reliable catching of the hinge bolt: no unintentional shifting ・Pinch guard prevents operators' fingers being pinched