Angel Wing Charm Material: Copper, safe for sensitive skin. The Diameter of The Hole is 4.8mm-5.0mm,Compatible with most U.S. and European bracelets,Pandora Charm Bracelet Charm for your mom,lover, fiancee, wife, mother, sister, friends. Charm for Graduation, Birthday, Mother's Day, Christmas, Valentine’s Day, Engagement, Wedding Anniversary, etc. If you have any question, please be free to contact us Suitable for bracelet & necklace：The Hole Size:about 4.5mm. Compatible with 3mm European charm bracelets and necklaces. Nickel-free,Lead-free,Cadmium-free and Hypoallergenic,compatible with snake chain bracelet, fit pandora charms bracelets, fit for both necklace and bracelet.