The flat face of the hammer is useful for striking punches and chisels. The peening face is handy for rounding off the edges of metal pins and fasteners, such as rivets. The two-sided steel heads give you options for working on different projects. Use the ball pein side of the hammer for spreading and shaping metal. The flat side is used for striking tools, such as stamps to create personalized jewelry. The lightweight wood handle is easy to grip and works in partnership with the weighted head, which is easy to control.