Sterling Silver Split Rings - Mini Keyring/Keychain Bail To Securely Attach Charms Pendants Metal: Genuine Solid 925 Sterling SilverSize - Weight~ 5.2mm outside diameter, 3.5mm inside, 0.1g each~ 6.2mm outside diameter, 4.1mm inside, 0.15g each~ 7.2mm outside diameter, 5.0mm inside, 0.25g each Select from dropdown list -------Shipping options: Economy Shipping (First-class mail) 2 - 10 business daysStandard Shipping (USPS Ground Advantage) 2 - 5 business days