This is a set of 3 components for making a PET bottle rocket. ・Rubber nose cone ・Nozzle component The launch port is a standard male connector for a garden hose. Suitable for experiments such as crafts and science projects. This is only a parts listing, so please purchase only if you know how to use them. I will answer questions, but I cannot provide specific instructions on how to build or play with it. Shipping will be via Yu-Packet Post Mini. Everything in the image is included.