Rhodium on 925 Sterling Silver Round Clear Cz Crystal Tube Birthday April Bead For European Charm Bracelets Fits Pandora, Troll, Chamilia, Biagi and other European style Charm 3mm snake bracelets Slide on (non-threaded) Bead Rhodium on 925 Sterling Silver (stamped) and CZ Crystals Hole size is approximately 4.3mm