B6-4 Model Rocket Engine Fp Flight Pack

The Estes B6-4 is a single-use model rocket engine designed for compatible Estes model rockets. The designation B6-4 indicates the thrust class, average thrust, and ejection delay, making it suitable for rockets requiring a B-class motor with a 4-second delay before ejection charge fires. This flight pack includes engines along with the igniters and recovery wadding needed to fly. It is a flammable product intended for hobbyists familiar with model rocketry safety guidelines. B6-4 designation: B-class engine with 4-second ejection delay
Includes igniters and recovery wadding
Single-use engines
Warning: flammable product

7/7/26 cs