Approximately 39x10x3mm copper plated base metal hinged bails for donut shaped pendants. These bails have a 26mm inner diameter. Easy to open and close. Plated over zinc. Antiqued copper plated components are often used to give jewelry a classic and vintage look. Fits up to 3.2-3.6mm chain or cording. For use with 50mm round gemstone donuts up to 7mm thick. Once the interlocking loops are strung onto chain or cording, the donut is securely locked.