13mm antique copper plated steel disks with bail for gluing and soft soldering. Approximately 18mm total pendant height, 13.3x0.5mm disk. Antiqued copper plate is a copper plating that has been darkened to provide a "distressed" appearance. Bail slightly open at the back, for slipping over thin chain or cord. Not meant to be opened (likely to crack the plating), but if you want it closed, gently squeeze it shut and apply some glue.