DIN ISO 8986 DIN EN/IEC 60 900 pliers chrome-plated, handles insulated with multi-component covers, VDE-tested, 1000 V self-clamping on pipes and nuts: no slipping on the workpiece, effortless work 9-stage ratchet adjustment Gripping surfaces with specially hardened teeth, hardness of the teeth approx. 61 HRC: permanently secure gripping due to high wear resistance Box joint: high stability due to double guide Clamp protection prevents crushing injuries - Chrome-vanadium electric steel, forged, oil-hardened, water pump pliers, 250mm, insulated, 2-component, grooved joint