Use a broach like a hand twist file to enlarge and align holes before using your tap and die tools. Ships in a pouch for convenient storage and carrying. Plastic handles, regular tapered. Six sizes: 2.4 mm, 2.7 mm, 3.2 mm, 4.2 mm, 5.2 mm, and 6.2 mm.<P>Please contact us with any questions. Please visit our store for other great jewelry tooling items such as; Hand Stamps, Disc Cutters, Polishing Compound, Buffers, Hammers, Tweezers, Mandrels, Anvils, Vises and more! Thanks for Looking!