SEXY SPARKLES Birthstone Charm Bead Compatible for Most European Snake Chain Bracelets Quantity: One Cubic Zircon Birthday Color Charm Bead Compatible for Most European Snake Chain Bracelets Size Hole is 4.5 mm slide on Cores(not threaded) Material: Copper(Lead & Nickel Safe) & Cubic Zirconia Fits and compatible with Pandora, Biagi, Chamilia, Zable, charmed memories and Troll Chains