KNIPEX water pump pliers Smart-Grip DIN ISO 8976 fully automatic adjustment on the workpiece simply by pressing the pliers handles together one-handed operation for right and left-handed users gripping surfaces with specially hardened teeth, hardness of the teeth approx. 61 HRC polished head handles with single-coloured single-component cover length: 250 mm, SmartGrip® water pump pliers, 250mm, 2-component, grooved joint