Estes Rockets - E16-4 29mm Model Rocket Engines (2pk) Replacement Parts Airplane Electronics Plastic pieces molded in yellow

Plastic pieces molded in yellow and black

Tech Notes: RPM #72062 replaces the front A-arms from stock Associated #25804

Soft Warmth: This magic study model has a welcoming

stealthy finish

While it features a classic rear buggy tread design

Estes Rockets - E16-4 29mm Model Rocket Engines (2pk) Replacement Parts Airplane Electronics Plastic pieces molded in yellowThe 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