Pro Jewelry Solid .925 Sterling Silver "Ultimate Safety" Chain Lock Stopper Charm Bead for Snake Chain Charm Bracelets Quantity: One Safety Chain, 2 threaded locks, Lobster clasp Design: The Ultimate Safety Chain Fits: All major Brand Bracelets, such as Pandora,Kay's , Troll, Chamilia, Carlo Biagi, Zable, and other add-a-bead bracelets.