Estes Pro Series II Doorknob Model Rocket Multicolored

The Pro Series II Doorknob rocket is the perfect addition to any rocket enthusiast's collection. It is a 1:5.3 scale model of the single and two stage Doorknob rockets used by scientists in the 1950s to measure the effects of radioactivity from nuclear testing. The rocket is designed to be both fun and simple to build and fly, making it suitable for rocket enthusiasts of all skill levels. The Doorknob rocket played an essential role in collecting data on the effects of nuclear testing on the ozone layer and possible long range radioactive fallout.