CleverDelights 3" round aluminum blanks are great for stamping, engraving, and etching projects. Thickness: 14 ga / .063" / 1.6mm. Raw aluminum material. Qty: 3. They may also be used as valve tags or ID badges. These raw aluminum discs have been deburred. Made in the USA. View our full selection of aluminum tag sizes and shapes by searching for CleverDelights stamping blanks here on Amazon. Thanks for shopping with us!