The Estes A3-4T Flight Pack is designed for small, lightweight model rockets requiring 13mm mini engines. With a 2.50 N-sec total impulse, a 4-second delay, and a thrust duration of just 0.6 seconds, this engine delivers quick, efficient liftoffs followed by reliable deployment timing.

Each flight pack includes 4 A3-4T engines, 4 starters, 4 plugs, and 12 sheets of recovery wadding—making it a complete solution for rocketeers looking for consistent mini engine performance in every launch.

Includes:

- 3 A3-4T Engines

- 4 Starters

- 4 Starter Plugs

- 12 Sheets of Recovery Wadding