The Knipex 61 01 200 have hardened blades these are ideal for piano wire for thick and soft wire such as rivets bolts with almost flush cutting of bolts nails etc These Knipex bolt end cutting nippers have high cutting capacity as result of optimal transmission of power applied Cutting edges with additional inductive hardening and the edges have been hardened to approx 64HRC The Knipex KPX6101200 are made from the best sourced materials vanadium electric steel that has been oil-hardened for added strength and durability Length 200mm 8 in Polished head Handles PVC plastic coated