The B6-4 is a medium impulse engine that delivers high altitude flights. It works great for launching larger, heavier rockets, too.
- Includes 24 rocket engines, 30 model rocket starters, 24 reusable starter plugs, and 75 squares of recovery wadding
Estes model rocket engine bulk packs are available in four total impulse ranges: A½A (mini engine), A, B, or C (standard engines). These packs may be used for the rocket bulk packs or other Estes rockets. Whether you are launching rockets at school with students, at a youth group activity, or rocket club monthly launch, Estes engine bulk packs are a must.