LQZ(TM) 6Pcs Silver Plated Skull Lock Stopper Charm Bead fit European Style Bracelets Make Your Bracelet Unique;Compatible With Most Major European Style Charm Bracelets. Pack of 6. Materials:Zinc Alloy ( Lead and Nickle Free) Color:Silver Plated. Size(Approx):Dia:11mm;Thickness:9mm;Hole Size(Approx):4.0mm.