good access to the workpiece thanks to the slim design in the head and joint area, more power and comfort compared to conventional water pump pliers of the same length: 9-step notch adjustment for 30% more gripping capacity, box joint: high stability thanks to double guidance, self-clamping on pipes and nuts: no slipping off the workpiece, energy-saving work, anti-trap protection prevents crushing injuries, favorable leverage: optimal power transmission, gripping surfaces with specially hardened teeth, hardness of the teeth approx. 61 HRC: permanently safe gripping thanks to high wear resistance, chrome vanadium electric steel, forged, oil-hardened in several stages