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