The improved Lazer Line® medium SLIM LINE tapered relieved head cutters feature a smaller frame and black oxide finish to inhibit rust and glare. In addition they feature a brand new molded grip. They are made of AISI 52/100 carbon tool steel with induction hardened cutting blades to RHC 63-65. The CNC machining allows the joint surfaces to be perfect to allow for long life. The dual leaf springs provide a smooth action.