These fit Thermador gas range PRDS366US and certain others. The part number 15-12-560 is seen in the photographs (it is on the bottom side of the cap.) I took these from my gas range that I replaced recently. Everything was working. There are no cracks or chips. I would be glad to send you more pictures if you’d like. Please note that with calculated shipping if you buy several caps, you save on the shipping compared to buying one by one.