SEXY SPARKLES Birthstone Spacer Bead Charm for Snake Chain Bracelet Quantity: One Charm Size: Approx: 10mm, Hole size: 4.7mm Slide on core Not Threaded. Thickness: 5.8mm Material: Zinc metal alloy +Rhinestone, Silver Plated Metal Base Fits: All major Brand Bracelets, such as Pandora, Troll, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets.