Number & Letter Stamps Uppercase HimaPro 5/32 Inch 4mm Letter and Number Stamp Set 36pcs 40Cr Alloy Steel Metal Stamp Set Number and Letter Punch Set in a Wooden case Includes uppercase letters A-Z, the & character, and numerals 0-9. 5/32 inch (4mm) character height.Permanently imprints metal, wood, plastic, leather, and so on.Material: 40Cr Alloy Steel, sandblast finished. Harder and more wearable than carbon steel.Character Indexed wood box keeps stamps well organized and easy to locate Buy on Amazon 1/8 Inch 3mm 1/4 Inch 6mm 5/16 Inch 8mm