These brass metal pendants have 1mm thick wires creating the look of a bird cage and come with a hinged bottom. The cage itself measures 17mm on the outside so you can place a15mm or smaller bead (or any item that fits)within it. Close it and the loops at the top line up making it ready to attach to your necklace, earrings or any other designs you can dream up! Ready to use with an Antique Silver finish on a brass base material.