These stamps are classified as "premier grade," therefore ideal for prolonged industrial use. Each shank is tempered foran extra dose of safety, and the increased length provides a better impression. All of the numbers and numbers are reversed for creating molds, dies, or die casting dies. On a mold stamp the character is engraved normal and reads left to right, so when it is stamped it reads the correct direction. This set consists of 36 pieces, 0 through 9 (6 used as 9), A through Z, and an ampersand (&).