Tackle metalworking, automotive, mining, or industrial projects with the hard-hitting power of this Estwing brass sledge hammer. Designed and built for heavy-duty use, these hammers featured a forged head that is made from drop forged brass or 99.99% pure copper. The resulting softer head will mushroom when striking harder materials like iron and steel, preventing damage to struck objects with finished surfaces that would be easily damaged by a hardened steel hammer. Because the head is made of soft brass or copper, it resists sparking during use making it ideal for use in mining, natural gas and oil drilling and refining, and any area where tools that might cause sparks during use cannot be used.