For very tough, continuous use. High cutting performance with minimum effort due to optimum co-ordination of the cutting edge angle and transmission ratio. Precision cutting edges additionally induction hardened (cutting edge hardness approx. 64 HRC), for all sorts of wire including piano wire. Chrome vanadium heavy-duty steel, forged, oil-hardened. The 250-mm-long diagonal cutter is suitable for copper conductors up to 16 mm² and aluminium conductors up to 35 mm².