The benefits of working with these water pump pliers are plain to see. They are compact, light and stable, can be positioned on the component quickly and are self-locking, e.g. on pipes and nuts. For pipes, nuts, sleeves, for various kinds of components: the professional user applies the Knipex Cobra quickly and accurately with just one hand movement. The spring-loaded hinge bolt locks securely into place without adjusting inadvertently. The Knipex Cobra is further stabilised by the box joint design. Unlike pliers with mounted joints, no tilting forces arise when under strain. The handles stabilise each other in the joint. The Knipex Cobra clamps onto the component securely by itself thanks to the jaw geometry developed by Knipex. This means the user can put all energy into the desired movement without pressing the pliers handle together – and thus without energy loss: round components can be turned, bolted connections tightened and released. 1000 Volt Insulated No Material Type Chrome vanadium electric steel, forged, oil-hardened Handle Type Non-slip plastic Gripping Surface Serrated Surface Finish Polished jaws Other Surface Finish Grey atramentized Knipex 87 01 250 10″ Cobra® Water Pump Pliers