IMPRESS ART-Metal Stamps. Leave a lasting impression on your artwork! These metal stamps are designed with the jewelry maker in mind. They are precision-cut from hardened steel and will last project after project. Simply use a hammer to impress the design into a metal blank, clay, wood, leather, or other soft material. Each stamp has a 2-1/2 inch long shaft that is clearly labeled on one edge. Each package contains one metal stamp. Available in a variety of designs (each sold separately). Size of the actual stamped impression ranges from 3mm to 7mm depending on the design. Imported.