Deluxe Disc and Doming Set, 22 Pieces | DAP-430.00 Ideal for cutting perfect circles and domes out of sheet metal Made of hardened tool steel; wooden box Includes a small disc cutter and 21 punches: 7 flat, 7 concave and 7 convex Cuts 7 sizes: 1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch and 5/8 inch Forms and cuts cone or domed shaped discs