Set Contents: Arc End Punch Set of 10 Material: Iron Sizes: 5mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm Thickened R-corner Cutting Mold Thick, shallow round knife type Sharp and thick large cut This is a set of 10 leathercraft thickened R-corner cutting molds, arc end punches. You can use them to customize wallets, business card holders, smartphone cases, etc., and they are widely used by beginners to advanced users. The product has sharp parts, so please store it out of the reach of small children. When punching holes, place the material on a sturdy piece of wood, lay a cutting mat on top, and strike with a shockless hammer, etc.