This is a Very nice Vtg. 16 Pc Assorted Shank Button Lot, Twinkle, Cut Steel, Brass, Porcelain, 1/2 to 3/4 Inch with Shank, in Good Shape! Not sure about what a few are made of, possibly ceramic or porcelain? Steel or Brass? The pictures are a substantial part of the description so please examine all the photos and contact me if you have any questions. We will be happy to save you shipping costs by picking this up at our shop. Thanks for looking. 111822-08-RK