TEKTON 6610 36-pc. 5/32 in. Letter and Number Stamp Set Feature: Permanently imprint metal, wood, plastic, leather, and many other items using the TEKTON Letter and Number Stamp Set. Featuring all of the letter and number characters, the stamps are ideal for hobbies and other projects. They also permanently mark tools, bicycles, equipment and other objects with identifying phone numbers or email addresses to help prevent loss or theft. Constructed from heat-treated, chrome vanadium steel with a corrosion-resistant black oxide finish, the stamps are built to last. Included is a wooden index storage box that neatly organizes the punches for fast identification and selection.