The Knipex KPX 87 02 250 Cobra Water Pump Pliers have automatic adjustment. They can be opened and adjusted directly at the workpiece with one hand. The Cobra pliers close with a push of a button and offer a good strong grip on the workpiece. 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 approx. 61 HRC. These Knipex 87 02 250 pliers combine low wear with a secure gripping action. With fine adjustment, that ensures optimum adjustment to differently sized workpieces, user-friendly handle position and a secure catching of the hinge bolt, ensures no unintentional shifting when in use. The box-joint design is high in stability and, because of the double guide, will hold nuts or bolts securely without slipping on the workpiece. This means the minimum hand force is required. These Knipex water pump pliers have a user friendly guard to prevent the operator's fingers from 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, and have PVC dipped handles for user comfort and a positive grip.Specification: Length: 250mm (10in).Adjustment positions: 11.