For very tough, continuous use High cutting performance with minimum effort due to optimum coordination 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, multi stage oil-hardened Multi-component grips Plier material: atramentized/lacquered/burnished Cutting capacities medium hard wire: 4.6mm Ø Cutting capacities hard wire: 3.5mm Ø Cutting capacities piano wire: 3.0mm Ø