You are purchasing 12pcs for the price. This is a base metal cameo setting with an antique bronze finish. It has a hole at he top...or bottom depending on how you will use it. This certainly is the least expensive 30x22mm setting I know of. It is fine for some applications, scrap booking, fund raising, door prize, etc. I wouldn't recommend it for your mom 's heirloom cameo though. It is very thin, stamped metal. That can be good because it is so light in weight, but if you worked hard on an expensive piece of your art work you might be disappointed with the quality. It is what it is and the price is RIGHT!