This set of blank coins is made of solid Metal with non-electroplating brushed treatment, , dustproof, rustproof, wear-, not easy to fade, break or deform, and can be used for a long time. This set features a compact blank , perfect for laser engraving various patterns, text, or personalized designs; each coin comes with an transparent acrylic protective box to better protect the coins , to prevent loss, scratches, damage or soiling. Details: The package includes 15 pieces of blank with acrylic protective box, diameter 4cm/1.57 inches, thickness 0.2cm/0.08 inches, enough quantity and suitable size to DIY or make crafts. Blank coins can be engraved as collectible coins or commemorative coins, suitable for coin collection, DIY craft enthusiasts, family, friends or colleagues, and can also be matched with various hooks, rings, pins, tassels, etc. to make exquisite pendants , necklaces, bracelets, earrings, customized key chains, pet ID collars, souvenirs or other decorations. Metal coins are suitable for laser engraving, hand engraving or metal engraving machines. The internal materials may be oxidized, blackened or patinated during the engraving process. This is normal!, Weight: 1.0031032921 Pounds, Manufacturer: Wesafrae