The KNIPEX Cobra Water Pump Pliers are the perfect gripping pliers for every application. The Cobra Pliers will grip any shaped object - round, square, hex or flat with a bite like no other pliers. This three-piece Cobra Pliers set comes with a tool roll to keep your pliers clean and organized Adjustment at the touch of a button directly on the workpiece Fine adjustment for optimum adaptation to different size workpieces and a comfortable gripping position Self-locking on pipes and nuts: no slipping off the workpiece and low handforce required Gripping surfaces with special hardened teeth, teeth hardness (approx. 61 HRC): low wear and reliable gripping