Professional quality traditional hammer for use in many industries, such as building, automotive, engineering, etc. Roughneck ball pein hammers are manufactured from hardened & tempered drop forged alloy steel. Also known as mechanic’s hammer, used in metalworking. It is designed for striking chisels, punches & for riveting, shaping & straightening unhardened metal. The peening face is useful for rounding off edges of metal pins & fasteners, such as rivets.SAFETY WARNING: Users & bystanders must wear eye, face & body protection when this tools is being used. Keep in dry environment & oil slightly to prevent rusting.