Knipex 74 02 Series High Leverage Diagonal Cutters for very tough, continuous use. Made from chrome vanadium, heavy-duty steel, forged, multi stage oil-hardened. The precision cutting edges additionally induction-hardened (cutting edge hardness approx. 64 HRC), for all sorts of wire including piano wire. Fitted with multi-component, soft grip handles that are lightweight and compact. They offer high cutting performance with minimum effort due to optimum coordination of the cutting edge angle and transmission ratio. 74 12 180 SB has a opening spring; to be activated if required.