The Knipex 88 06 250 Alligator 9-position water pump pliers have automatic adjustment. They can be opened and adjusted directly at the workpiece with one hand and then closed, thereby providing a good strong grip on any job application. The integrated spring of the automatic adjustment is shielded in the handles for user safety and the gripping surfaces have special hardened teeth which are hardened to approximately 61 HRC. These Knipex 8701400 water pump pliers offer a secure gripping action with low wear. With the combination of fine adjustment, which ensures optimum adjustment to differently sized workpieces, user-friendly handle position and a secure catching of the hinge bolt there is no unintentional shifting when in use. The heavy-duty box-joint design is high in stability because of the double guide which will hold securely on nuts or bolts, without slipping on the workpiece. Low hand force is required. These Knipex Alligator water pump pliers have a user friendly guard built in to the VDE handle coating to prevent the operators fingers being pinched. The pliers are made from strong chrome vanadium electric steel that has been forged and then oil-hardened for added strength and durability. They have coated handles for user comfort and a positive grip which are tested up to 1,000 volts.