We&';ve combined the Roll Pin Starter Set and the Ball Profile Roll Pin Punch Set with a precision machined gunsmithing hammer into one comprehensive kit. Machined and hardened from steel and designed with a counter-bored tip. The 9 piece set includes: 5/16", 1/4", 7/32", 3/16", 5/32", 1/8", 3/32", 5/64" and 1/1". Features- a small 6 oz. hammer for precise control and smaller roll pins, steel head for metal punches and surfaces and brass head for preventing marring.