Wheeler Engineering combined the Roll Pin Starter Set and the Ball Profile Roll Pin Punch Set with a precision machined gunsmithing hammer into one comprehensive kit. Ball Profile Roll Pin Punch Set : 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 9 piece set includes: 5/16, in. 1/4, in. 7/32, in. 3/16, in. 5/32, in. 1/8, in. 3/32, in. 5/64, in. 1/16 in. Keeps punch from walking off pin Knurled handles Roll Pin Starter Set : Machined and hardened from steel to prevent bending or breaking while starting roll pins Designed with a counter-bored tip to properly align and start the roll pin, preventing damage to the firearm The 9 piece set includes: 5/16, in. 1/4,in. 7/32, in. 3/16, in. 5/32, in. 1/8, in. 3/32, in. 5/64, in. 1/16 in. Knurled handles Small Hammer : Small Hammer (6 oz) for precise control and smaller roll pins Steel Head - For metal punches and surfaces Brass Head - For preventing marring