These Knipex 200mm Cobolt Bolt Cutters With Sprung Handles are professional quality. They are manufactured from chrome vanadium electric steel, oil hardened & tempered. These cutters will easily cut piano wire, soft solid wire, bolts, nails, rivets & screws. Little hand force is required to cut piano wire thanks to the lever action of the pliers. The Heavy duty plastic coated handles ensure maximum comfort, & they are fitted with return spring & locking mechanism.