Estes model rocket engine bulk packs are available in four total impulse ranges: 1/2A (mini engine), a, B or C (Standard engines). These packs may be used for the rocket bulk packs or other Estes rockets.; cannot be shipped outside the US and can only be shipped by ground. Expedited shipping not available for this product.
- Estes motor flight pack a8-3 24 motors 1781.