Estes 10055 B6-4 Engine Flight Pack (3-Pack)

Ready to boost your mid-sized model rockets? The Estes B6-4 Engine Flight Pack delivers consistent performance with a 4-second delay and 0.8-second thrust duration—great for rockets up to 4.0 oz. With a total impulse of 5.00 N-sec, it offers a reliable balance of power and stability for hobbyists of all skill levels.

Each pack includes 3 B6-4 engines, 4 starters, 4 plugs, and 12 sheets of recovery wadding. It’s everything you need for multiple launches, all in one convenient kit.

Includes:

- 3 B6-4 Engines

- 4 Starters

- 4 Starter Plugs

- 12 Sheets of Recovery Wadding