The CatsPaw Automatic Center Punch, No. 17329, from Mayhew Tools delivers an automatic spring-driven punch when pressed against a surface without the need for a hammer. When pressed against the workpiece, it stores energy in a spring and releases it as an impulse that drives the punch. This punch is ideal for creating a starting point on workpieces to prevent drill bits or screws from wandering. The punch force, ranging from 13.5 lbs to 31.5 lbs, can easily be adjusted with the turn of a knob, located on the handle. The tool features a chromium-vanadium alloy steel body and an ergonomic handle, that allows for effortless handling.