Matetial: These Open Bezel Pendant Backs are Made of high quality alloy, strong and durable. Wide Usage:The bezels pendants backs are perfect for making a necklace, bracelet, earrings, scrapbooks project, key chain, key ring, sweater chain, anklet, cellphone decorative accessories Great additions to your DIY project: You can use the pendant blanks to make different crafts, resin, cameo pendants, photo Jewelry, custom jewelry, cameo pendant Easy to Use: Using these pendant trays to fill them with epoxy resin, glitters, rhinestones, pearls, mini charms, mini cabochons, dried flowers Quantity: 10 pcs for each style, 30pcs in total; Color: matte silver, gold, bronze