More output and comfort compared to conventional water pump pliers of the same length. Offers 9 adjustment positions for 30% more gripping capacity. Good access to the workpiece due to slim size in the head and joint area. Self-locking on pipes and nuts means no slipping 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. Robust construction, suitable for outdoor work. Pinch guard prevents operators' fingers being pinched. Chrome vanadium electric steel; forged, multi stage oil-hardened.