Each metal blank measures 5/8 Inches (16mm) diameter, has a 2/16 inch hole (2.4mm), and is 1/6 Inch (1.5mm) thick. The metal discs are slightly smaller than a dime. Because they come in bulk quantities, these stamping blanks are perfect for metal stamping and embossing practice! Learn metal stamping without the guilt of wasting expensive metal stamps. Send these metal blanks through your Big Shot, Sizzix or other embossing machine easily. Have a new metal stamp that's hard to get just right? Use these metal blanks to practice and improve your technique! The antiqued bronze tone finish is perfect for steampunk crafts, earrings, charms, jewelry making and works well with Vintaj Embossing machines! These metal discs are perfect for crafting embellishments. 50 Antique Bronze Tone Crafting and Metal Stamping Blanks 16mm or 5/8 Inches. Made of zinc metal alloy. Craft Making Shop brand.