Material: Alloy Steel. Size: The height of Alphabet & Number is 6mm. 36 Pcs/Set alphabet letter number, including 10 Pcs 0-9 numbers and 26 Pcs A-Z alphabet letters. With 26 Letters and 10 numbers, versatile enough to make your own words. It's easy and fun to stamp designs in leather with these tools. Suitable for handmade Leather jacket, bags, shoes, belt, wallet, watch wristband and other crafts embellishments. Best used for vegetable tanned leather with a thickness of more than 1.5mm. AN AWESOME TOOL for leather craft professionals and amateurs. These stamps are made of extremely strong, heavy-duty alloy steel for powerful impact and long service life, giving you stronger imprints that display more accurately. You can make clear and accurate stamping results with less time and effort. Usage: Wet the leather with a wet sponge before works,Then use the hammer to hit the end of the handle and control the power, avoid ghosting or surface damage. Introducing the Yoption Leathercraft Metal Letter and Number Stamps Punch Set, a must-have tool for leather crafters and enthusiasts. This set includes 36 pieces of alphabet letters and numbers, allowing you to create personalized and unique designs on various leather items. The stamps are made of heavy-duty alloy steel, ensuring a long service life and powerful impact for clear and accurate stamping results. The ideal thickness for the leather is more than 1.5mm, and it is recommended to wet the leather with a wet sponge before use. This set is suitable for handmade leather jackets, bags, shoes, belts, wallets, watch wristbands, and other crafts embellishments. Experience the joy of leather crafting with Yoption's high-quality stamps.