Pro Jewelry (Set of 2) .925 Sterling Silver "Multi Color Rainbow" Rondelle with Crystals Quantity: 2 Beads Material: S925 Solid Silver Single slide on Core 4.5mm (not threaded)With CZ Crystal Fits: All major Brand Bracelets, such as Kay's, Pandora, Troll, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets.