Reloadable Shell Kits are variety packs of mortars. Each pack ranges from 1-4 firing tubes, 6-200 shells, and 6-800 breaks. The shells each come with a long fuse on the end that is dropped into the provided tube(s) and lit from the top. Once the shell is lit, it flies up to 120 feet into the sky and has a huge aerial break with tons of color, noise, and floral effects. These shells are perfect for July 4th celebrations, birthday parties, gender reveals, backyard displays, and any other get together regardless of how big or small. Typically, the single shot shells have larger breaks and the largest ones come in a cylinder shape and have up to 60 grams of powder. The 2, 3, 4, 5, and 6 break shells have smaller breaks but more of a display because of the multiple breaks. These shells are great if you have a multiple shot rack and fuse them together for a great finale. For people that have larger budgets, For people that have larger budgets, likes aerial shows and/or louder noises, buying a variety of reloadable shells kits in combination with 200 gram cakes, 500 gram cakes, firecrackers, rockets, roman candles and other aerial devices are the best route to put on a huge backyard display.