Stamp any flat, soft metal. Use this punch to personalize metal blanks (made from non-ferrous metals such as Sterling Silver, Copper, Vintaj Natural brass and more). 6mm (1/4 Inch) design. Made of tempered steel for years of service. Face IMPRESS ART logo toward you to ensure all of your design stamps come out right side up. Use with a metal bench block or anvil and a 16 ounce flat head hammer. Hold your blank in place on a bench block using simple masking tape. The masking tape can also act as a guide to assure your design is in the right spot. Measurements: Punch is 2 5/8" in length. Design height for this piece is approximately 6mm (1/4 Inch) with 4.5mm width. Quantity: 1 stamp in one pattern.