Knipex 9516 StepCut, special tool steel, forged, oil-hardened, chrome-plated, innovative step cutting with precision ground for noticeably less effort when cutting, screw joint, insulated 1000 V with multi-component grip sleeves, VDE tested. For cutting copper and aluminium cables. Not suitable for steel wire, steel-reinforced cables, aluminium alloys and hard-drawn copper conductors.