Estes Rockets - E16-4 29mm Model Rocket Engines (2pk) Replacement Parts Airplane Electronics AFX track goes together and

AFX track goes together and comes apart easily while maintaining excellent electrical contact

Trainer System Compatible with all SD Series Transmitters

Working LED Lights

While it features a classic rear buggy tread design

Estes Rockets - E16-4 29mm Model Rocket Engines (2pk) Replacement Parts Airplane Electronics AFX track goes together andThe E16 4 Engines (29 mm) by Estes Rockets deliver powerful and reliable performance for mid to high powered model rockets. Ideal for single stage flights or upper stages of multi stage designs, these engines provide an impressive total impulse of 33. 68 N sec and a 4 second delay for optimal parachute deployment. Whether you're launching larger rockets or experimenting with advanced models, the E16 4 is the perfect choice for rocketeers seeking