- 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-hardenedLength 250 mm:- the 250-mm-long diagonal cutter is suitable for copper conductors up to 16 mm² and aluminium conductors up to 35 mm²