Yeshan Antique Silver Clip Lock Bead Charms with Rubber Stopper O-Rings The material is:Zinc Alloy Metal - Tibetan Silver Hole size is approximately 4.5 to 5mm. Beads size are between 7 to 12mm depending on which designs Beads are alloy base, oxidized silver plated. Core is not threaded to easily slide onto various European bracelets & necklaces Silver Clasp Spacer Stopper charms Fit Pandora Chamilia Style Bracelet & Necklace 16 clips and 16 Silicone Stoppers O-rings free (Styles You Will Receive Are Shown in Picture Random 16 Clips Mix) You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!