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Estes B4-4 Model Rocket Engine (3 Pack)
| Technical Specifications | Length |
| Diameter | 3/4" |
Features:, B-class model rocket engine 3 pack., Includes:, 3 B4-4 Model Rocket Engines,
For use in single stage model rockets
Estes B4-4 B-class single stage model rocket engine designed to launch model rockets.
Single stage model rocket motor.
Detailed instructions.
Easy to use.
National Association of Rocketry certified.
3 Igniters
3 Plugs
Check price and availability
Found 11 years ago