Pliers and universal wrench in one tool. Self-locking on tubes and bolts, immediate and precise adjustment by simple pin pressure, no accidental adjustment. Greater travel, with a much lower weight than comparable pipe wrenches. Quick adjustment in the room at the touch of a button, no unexpected sliding of the hinge. Precise adjustment for perfect adjustment to different workpiece sizes and ergonomic handles. Self-locking on tubes and nuts: does not slip on the workpiece, work requiring less effort. Inside specially hardened teeth jaws, hardness approx. 61 HRC: secure clamping due to high wear resistance. Hinge between: high stability thanks to the double guide. Protection pin to avoid pinching. Chrome vanadium steel, forged, oil-hardened in several phases.