Good access to the workpiece thanks to the wide shape of the head/shoulder area. More performance and comfort than standard pliers of the same length: 9-position opening adjustment for 30% greater gripping capacity. Self-locking on tubes and nuts: no slipping on the workpiece, less effort required to work. Specially hardened teeth inside the jaws, hardness approx. 61 HRC: safe clamping thanks to high wear resistance. In-between hinge: high stability thanks to double guide. Robust, dirt-resistant design; ideal for outdoor work. Protective pin to prevent pinching. Chrome-vanadium electric steel, forged, oil-hardened in several phases.