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. The rocket's ability to capture radioactive data at altitudes of approximately 50 miles made it a crucial tool for scientists during this time.

The Pro Series II™ Doorknob rocket comes with two sets of decals, allowing for customization to turn it into a sports model. It is the perfect way to honor the scientific advancements of the 1950s while enjoying the thrill of launching a rocket into the sky.

• SKILL LEVEL: Advanced
• RECOMMENDED ENGINES: F15-4, F15-6, E16-4 w/Engine Adapter (sold separately)- D12-3
• PROJECTED ALTITUDE: 1100 ft. (335 m)