The diameter of the charm's hole is about: 4.5 to 5.0 mm. It is compatible with Pandora Moments snake chain bracelets, U.S. bracelets, European bracelets, and most kinds of charms bracelets but Pandora Me. A to Z Initial Letter Heart Charm for Bracelets fits Pandora Moments Bracelets. The Diameter of Hole: 4.4 mm, fits Pandora Moments Bracelets, U.S. and European Bracelets. Charm is Made of Copper. Nice charm for birthday, Mother’s Day, Valentine's Day, Christmas, anniversary, Father’s Day, Memorial Day, New Year's Day, Easter, and your special days. Suitable for mom, mother, mum, wife, grandma, grandmother, auntie, aunt, best friends, family, and women. Nice gift for birthdays, Mother’s Day, Valentine's Day, Christmas, anniversaries, Memorial Day, New Year's Day, Easter, and your special days. Suitable for mom, mother, mum, wife, grandma, grandmother, auntie, aunt, best friends, family, and women.