This set not only cuts flat discs, but also forms and cuts cone or domed shaped discs. It comes with a small disc cutter and 21 punches (7 flat, 7 concave, and 7 convex) all nicely packaged in a wood storage box. Domed discs are formed by using the convex and concave punches with the disc cutter. Cuts seven sizes – 1/4", 5/16", 3/8", 7/16", 1/2", 9/16" and 5/8". A great way to expand your designing options. The second picture shows examples of circles.