Get ready for some serious rocket-launching fun with this Estes Color The Sky bulk pack! You get a full dozen of these colorful crayon rockets - that's every color they make, all in one convenient package. These are E2X series rockets, which means they're super easy to assemble even if you're new to model rocketry. Each rocket comes with plastic fins that snap right on, self-stick decals for that finished look, and an 18-inch parachute that brings your rocket safely back to earth after launch. They recommend using B4-2 engines for the first flight, but you can also use B6-2, B6-4, or C6-5 engines depending on how high you want to go. Speaking of height, these bad boys can reach up to 550 feet - that's seriously impressive! Perfect for school projects, STEM education, birthday parties, or just family fun in a big open field. The bulk pack means you've got plenty of rockets for multiple launches or to share with friends. The bright crayon colors look amazing against the blue sky, and watching the parachutes deploy never gets old. Great for kids grades 3 through 12 (with adult supervision, of course), and teachers love these for science classes. Whether you're introducing someone to rocketry or are a seasoned launch veteran, this complete collection delivers hours of outdoor entertainment and learning. Just make sure you have a big enough launch area and follow all safety guidelines!