The double rings are made of silver metal and make 2 laps. They are used like keychain rings: more security than in relation to simple rings. Dear customers, so that the transaction takes place in a fluid and pleasant way, please take the time to read the following: - If you buy several items, don't forget to request the total before paying By ebay or email messaging, because Reduction of shipping costs is not automatically done, And The ebay basket does not work well. - Communication is very important on eBay, it makes it possible to avoid possible small concerns, There is always a solution for each problem ;) The articles are careful In sachets, bubble paper if necessary, and taped in the envelope. Each order is important, small or large. My dear European and world customers, if you want.