The Wheeler Engineering 22-Piece Roll Pin Punch Master Set with Hammer is comprehensive kit machined and hardened from steel to prevent bending or breaking while driving roll pins. Designed with a ball profile tip to provide proper alignment of the roll pin and prevent damage to the firearm or roll pin. The Master Set with Hammer is an excellent addition to your gunsmithing gear. Kit IncludesBall profile tip punches in 5/16," 1/4," 7/32," 3/16," 5/32," 1/8," 3/32," 5/64," and 1/16a ^2Counter-bored tip punches in 5/16," 1/4," 7/32," 3/16," 5/32," 1/8," 3/32," 5/64," and 1/16"FeaturesKeeps punch from walking off pinKnurled handlesSmall Hammer (6oz) for precise control and smaller roll pinsBrass Head - For metal punches and surfacesNylon Head - For preventing marring