The Wheeler Engineering® Roll Pin Punch set is machined from hardened steel to prevent bending or breaking while installing any roll pin. The punches are designed with a hemispherical tip to provide proper alignment of the roll pin to prevent damage to the firearm and the roll pin. The 9 piece set includes: 5/16″” 1/4″” 7/32″” 3/16″” 5/32″” 1/8″” 3/32″” 5/64″” and 1/16″ punches in a durable nylon sheath.