1 piece SabreCut Extreme Automatic Variable Force Impact Rated Centre Hole Punch and Metal Scribe. Ideal for creating a precise dimpled starting point on workpiece to prevent drill bits or screws from wandering. Delivers an automatic strong spring-driven punch when pressed down against a surface. Adjustable punch force - simply turn knob on handle to adjust the spring strike force from 60 Newtons to 140 Newtons, no hammer needed. Hardened S2 impact steel tip that is suitable for use on various materials, such as metal, wood, plastic and many more. Ergonomic rubberized handle with comfortable and slip-free grip provides a sure grip for better accuracy.