Pro Jewelry .925 Sterling Silver Core w/ Genuine Natural Agate Tiger Eyes Charm Bead Quantity: 1 Bead Material: Natural Stone Beads With S925 Solid Sterling Silver slide on Core 4.5mm (not threaded) Fits: All major Brand Bracelets, such as Pandora, Troll, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets.