925 Sterling Silver "Three Sided Letter 'O' Barrel" Charm Bead Quantity: 1 Bead Material: S925 Solid Sterling Silver (Stamped) Fits: Most major brand bracelets such as Pandora, Troll, Chamilia, Kay, Carlo Biagi, and other add-a-bead bracelets. Design & Color : Antique Finish Core : Sliding Core 4.9mm