These Fretz inserts are what you need to get the most out of your maker hammer.  The inserts come in 1, 2, 4, and 6 millimeter cross-peen insertS for sinking, planishing and fluting; and a 6, 8 and 35 millimeter ball-peen insert for shaping and removing dents.  Attach it securely to a holder or the hammer using an Allen wrench.  Order today at Stuller.com/tools.