Good Luck Elephant Animal Charm is Made of Copper The Hole Size is about 4.8-5.0mm Compatible with European bracelets DIY Jewelry for Charms Bracelets or Necklace Pendants Packaging Comes with 1 x Copper Charm Do not wear jewelry during exercise, bathing and swimming.The jewelry must be stored in a clean and dry place, such as the original box, soft cloth bag or cloth jewelry box.