All the engines you need for low u0026amp; medium altitude flights for model rockets that use mini engines

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Estes engines are the model rocket industry standard

nThis combo bulk pack provides 4 each of the Estes 1/2A3-2T, A10-3T, and A3-4T model rocket engines which are intended for model rockets that use Estes mini engines. Estes model rocket engines are the standard in the model rocket industry for easy to use and reliable propulsion for your model rockets.