Estes Rockets - B6-4 Model Rocket Engine FP (Flight Pack) GMA57010 -4mm heavy-duty adjustable alloy steel

-4mm heavy-duty adjustable alloy steel turnbuckles

0 features cool looks and stylish wheels that set the V2

generate innovative solutions

The light gray color primer is great for dark color applications

Estes Rockets - B6-4 Model Rocket Engine FP (Flight Pack) GMA57010 -4mm heavy-duty adjustable alloy steelReady to boost your mid sized model rockets? The Estes B6 4 Engine Flight Pack delivers consistent performance with a 4 second delay and 0. 8 second thrust duration great for rockets up to 4. 0 oz. With a total impulse of 5. 00 N sec, it offers a reliable balance of power and stability for hobbyists of all skill levels. Each pack includes 3 B6 4 engines, 4 starters, 4 plugs, and 12 sheets of recovery wadding. It's everything you need for multiple