3mm Basic Uppercase Typewriter Metal Letters Stamping Set by ImpressArt. Add a sophisticated, timeless accent to your craft and jewelry designs with ImpressArt’s Typewriter letter stamps. This vintage typeface is clear, recognizable, and easy to read. It’s perfect for typing a nostalgic touch into your unisex, stamped creations. ImpressArt Basic alphabet & number metal stamps are rated for stamping on soft metals. Rated for stamping on Alkemé, aluminum, pewter, copper, brass, silver, gold, & other metals up to 56HRC Rockwell Hardness. Uppercase includes full uppercase alphabet and ampersand “&” stamps. Basic stamps are lightly coated with oil to prevent rust. Face ImpressArt logo toward you, when stamping; to ensure all of your design stamps come out right side up. Sold as one set.