KNIPEX Alligator®. Water Pump Pliers. Good access to the workpiece due to slim size of head and joint area;More output and comfort compared to conventional water pump pliers of the same length: 9-notch adjustment positioning for 30 % more gripping capacity;Self-clamping on pipes and nuts: no slipping on the workpiece, effortless working;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;Robust construction, insensitive to dirt; particularly suitable for outdoor work;Pinch guard prevents operators' fingers being pinched