This engine is a standard engine designed for flights in rockets weighing less than 3.5 ounces, including the engine.
Single stage engine.
Imported from USA.
Estes model rocket engines are simply the best! We have been
making rocket engines for over 50 years. Estes developed the
first machine to mass produce solid propellant model rocket
engines which gave rocketeers a consistent and reliable way to
launch rockets. Because of our quality and reliability, Estes
engines are considered by many to be the standard in the model