Wheeler Roll Pin Starter Set, 9 Piece, Hardened Steel, Black, Includes Nylon Sheath 710910 The Wheeler Engineering Roll Pin Punches are machined from hardened steel to prevent bending or breaking while driving any size roll pin. The punches are designed with a hemispherical tip to provide proper alignment of the roll pin to prevent damage to the roll pin and firearm. 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.