Search query: b4-4 rocket engines

Product: Estes C6-5 Mini Bulk Pack - 2 Packs of 3 for 6 Engines/Motors with Starters
Brand: Rocket
Relevance: Substitute
You get 2 full packs of engines. Enough to do 6 lauches!

Product: Generic Estes A8-3, B4-4, C6-5 Mini Bulk Pack - 9 EnginesMotors with Starters
Brand: Generic
Relevance: Exact
This combo pack provides 3 each of the most popular Estes engines for use in most model rockets. The A8-3 is used for first flights and small flying fields as you get used to how your rocket will perform and where it will land in your flying field. The B4-4's will almost double your altitude. The C6-5's will provide almost double the altitude that the B4-4's can provide. 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 low, medium, and high 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

Product: United Model B6-4 Engine Pack, Includes 3 Model Rocket Engines
Brand: United Model
Relevance: Exact
Includes three B6-4 rocket engines, four model rocket starters, and four starter plugs. The B6-4 is a medium impulse engine that delivers high altitude flights. It works great for launching larger, heavier rockets, too.
Use the B6-4 engines to launch the Generic E2X, Alpha III, Wizard, Viking, Alpha, and other compatible model rockets.
***PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or Post Office box for delivery.
Engine Specifications:
Length: 2.80" (7cm)
Diameter: 0.70" (18mm)
Estimated Weight: .63 oz. (17.9 g)
Total Impulse: 5.00 N-sec
Time Delay: 4 Seconds
Estimated Max Lift Weight: 4.0 oz (113 g)
Max Thrust: 12.10 Newtons (2.7 lbs)
Thrust Duration: 0.80 Seconds
Initial Weight: 0.63 oz (17.8 g)
Includes three B6-4 rocket engines, four model rocket starters, and four starter plugs
The B6-4 engine is single stage engine designed for flights in rockets weighing less than 4 ounces, including the engine
Each engine measures 2.80" (7cm) long and has a 0.70" (18mm) diameter
PLEASE NOTE: This item will ship by US Postal Service only
You MUST HAVE a physical mailbox or Post Office box for delivery

Product: Estes C6-5 Mini Bulk Pack - 3 Packs of 3 for 9 Engines/Motors with Starters
Brand: ROCKETS
Relevance: Irrelevant
Rocket engines, 3 engines with starters
You get 3 packs of engines for a total of 9 rocket motors