The knipex 13 series 4 in 1 electricians pliers are made from forged chrome vanadium electric steel then oil hardened ideal for cable work cutting stripping crimping gripping and bending precision stripping holes and cutting edges are separately induction hardened hardness approximately 60hrc for crimping end sleeves available with a pvc or multi component grip specification cutting capacity hard 16mm medium 25mm stripping capacity 05 075mm 15mm 25mm