This unique stopper bead lined with a rubber gasket fits snugly onto your 3mm chain or leather cord to keep your charms from sliding around or falling off. It also doubles as spacer bead to enhance your design so you get flexibility along with versatility all in one. Not compatible with some popular charm bracelets. B9650 Designed from sterling silver with a rubber gasket Stops charms from sliding around or falling off Measures approximately 10 x 3mm Fits most 3mm charm bracelets and necklaces Includes a custom Black Bow Jewelry Company gift box