Roll marking machine is used for marking cylindrical (solid or hollow) components of steel, aluminum, brass, etc - using National Interchangeable steel types and marking dies. Perfect for marking such specific components as : Drills Taps Engine Valves Spark Plugs, Cutting Tools Diamond Tools Bushes Nozzles Sanitary Fittings Hose End Fitting Gas lighters and Studs. Outstanding benefit : Low set-up time Easy operation High output rates Robust construction Low costs (uses standard tooling)