Punch Marking Stamping KitProduct Details1.Clear Imprint - Metal stamp sets are designed to create clear imprint on metal surfaces. The precise engraving on the stamp ensures that the letters, numbers, or symbols are accurately transferred onto the metal.2.High Hardness - Metal stamps are made from chrome-vanadium steel which is high hardness, provides durability and longevity of the stamps, allowing them to withstand repeated use without becoming damaged or worn.3.Metal Stamping Kit - Contains 36pcs of metal punch stamps (26 capital letters from A to Z, numbers from 0 to 8 , an "&" Symbol) sized 5/16" (8mm) of each, and 2 sizes of hole punches.4.