This is a nice new automatic center punch marked on the package"GENERAL NO. 70079 ALUMINUM BODY". In new condition, still in the original blister package. This type of center punch requires no hammer to set the center prick punch, simply position the pointed tip over the center point and push downward until the spring loaded mechanism clicks, punching the surface, so called automatically. The only difference with this one and other model General makes, is that this one has an aluminum body (won't rust).