Pro Jewelry .925 Sterling Silver "Red / White / Blue" Crystal Charm Bead for Snake Chain Charm Bracelets 3806 Quantity: 1 Bead Size: 12mm x 8mm ,Hole is 4.5mm slide on Cores (not threaded) Material: S925 Solid Silver Single with Swarovski Crystal Fits: All major Brand Bracelets, such as Pandora,Kay's , Troll, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets.