The Knipex Twinforce® High Leverage Diagonal Side Cutters are manufactured from chrome vanadium, heavy duty steel that is oil hardened and tempered. The smoothly ground heads have separately induction hardened cutting edges for cutting piano and medium hard wires. The cutter has Knipex's unique double hinged design allowing for 50% less effort when cutting compared with high leverage diagonal cutters. Heavy duty moulded handles and slip guards for extra comfort and safety are also featured.