The 9-piece Metalmaster dimple die set, manufactured from high strength chrome-molybdenum steel, is popular in metalworking and custom fabrication workshops. These dies are specifically designed to create flared holes, which help to strengthen metal sheets while also reducing weight, making them particularly useful in automotive, aviation, and off-road applications. Simply drill the recommended hole size in the metal that you desire to dimple, then depending on your preference you can use basic hand tools, or a workshop press to do the work.