Price listed is for each ring base. These are antique bronze plated brass filigree rings that measure about 16mm at the widest point. They appear to be castings. They have a smooth pad in the center that measures about 8mm. These can adjust from about a size 6.5 up to about size 12. These appear to be a decent quality ring. They are not perfectly flat in the center, but they will still work well for button rings, acrylic flower stones, and more!