TEKTON 6610 Letter and Number Stamp Set features: * Heat Treated, Chrome Vanadium Steel Punches * Black-Oxide Finished for Durability * 36 Punches Marked A-Z and 0-9 * Stamp Metal, Wood, Plastic and Leather * Permanently Imprint Names, Initials, and Codes on Personal Belongings * Helps Deter Theft and Recover Stolen Items * Punches Store in Stand-Up Wooden Index Box * Size: Shaft Length 2-3/8", Shaft Width 1/4", Character Size 5/32"