Dreambell 925 Sterling Silver Birthday Month Round Ring Crystal Bead for European Charm Bracelets Fits Pandora Troll Chamilia Biagi and other European style 3mm snake bracelets Slide on (non-threaded) Bead 925 Sterling Silver (stamped) with crystals Size: approximately 9.6mm diameter x 4.6mm wide Hole Size: approximately 4.5mm