Product: Estes B6-4 Mini Bulk Pack - 3 Packs of 3 for 9 Engines / Motors with Starters
Brand: Estes
This mini bulk pack provides 9 of the most popular model rocket engine in the market. The Estes B6-4 is used to provide medium altitude flights for model rockets weighing roughly between 1 and 2.5 ounces which is typical of most rockets being 1 to 2 feet tall. Refer to the instructions or packaging that came with your model rocket for the engines you should be using. Estes model rocket engines are the standard in the model rocket industry for easy to use and reliable propulsion for your model rockets.
All the engines you need for medium altitude model rocket flights
The best way to get engines in bulk without having to buy 24 of them.
Estes engines are the model rocket industry standard
This set of engines is for rockets that are roughly 1 to 2 feet tall and weighing between 1 and 2.5 ounces

Search query: b4-4 rocket engines
Relevance: Substitute