OIY1627 Features: * Automatic center punch * Material: Steel * Rugged automatic punches with all-steel handles and parts * Internal mechanism automatically - strikes a blow when downward pressure is applied * Spring tension, which regulates the blow, is constant so marks made by the point are uniform in depth and size for each setting * The point can be easily removed for regrinding or replacement * Adjustable knurled cap regulates the force of the blow * Heavy-duty * Punch Diameter: 11/16"" Dimensions: * Length: 5-1/4""