Copper, The Hole Size is about 4.8-5.0mm,Matching bracelet link: https://www.amazon.com/dp/B07PWJD17G?ref=myi_title_dp
Compatible with Pandora Charms, Biagi, Troll and Chamilia European bracelets. Fit for both necklace and bracelet.
Perfect Gifts For Christmas, Mother's Day, Birthday, Valentine's Day and Every Memorable Day!
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