The Performance Tool W5421 1/8" Steel Letter/Number Stamp is a versatile tool designed for identification purposes. This 36-piece stamping set includes 26 letters (A-Z) and the "&" sign, as well as 9 numbers (0-8, with the 6 used upside down for 9), providing a wide range of options for creating identification markings. Made with high quality steel, these stamps are durable and provide clean, sharp impressions with every use. They come in a handy storage box that keeps them organized and protected when not in use, making it easy to transport them to different job sites. To use, simply align the stamp with the item you want to mark, and strike it firmly with a hammer. The stamped impression will be clear and easy to read, making it simple to identify your items.