These pieces are quite unusual. I am not positive they were originally made to be wings, but they certainly look like it to me. They come in pairs and you will receive two pair (four pieces as shown) of these great pieces. Each wing measures 23mm from end to end. The backs are flat so are easily glued to a flat surface. Use them where you might use metal wings for a different look. They would be great for scrapbooking, jewelry, altered arts, etc. I'm going to try them out myself! I have more available if you need them. They are also available in Emerald Green Please convo me to discuss.