The Knipex KPX8702250 10" Cobra® Water Pump Pliers Multi-Component Grip have automatic adjustment and 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 they ensure no unintentional shifting when in use.