Estes Rockets - B6-4 Model Rocket Engine FP (Flight Pack) GMA57010 this trailer is built to

this trailer is built to impress

15T and 17T pinion

6mm (two 3mm placed back-to-back) thick replaceable carbon fiber steering arms

5mm Turnbuckle Wrench Gen 2 is the next generation tool from MIP that will take your RC to the next level

Estes Rockets - B6-4 Model Rocket Engine FP (Flight Pack) GMA57010 this trailer is built toReady 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