Estes 1607 B6-6 Model Rocket Engine Pack – 3 Engines with Starters & Plugs which is designed with dual

which is designed with dual channels and 1 external trigger channel

Includes shoulder strap for traveling and outdoor use

All 6 spools are contained in a cardboard dispensing box

It not only has compact design and a 64K TFT color LCD

The ducks light up automatically when you put them in the water

Estes 1607 B6-6 Model Rocket Engine Pack – 3 Engines with Starters & Plugs which is designed with dualPLEASE NOTE: These are 18mm diameter engines. Please refer to the instructions that came with your rocket (or the rocket's product description) to determine engine compatibility. Estes B6 6 engine pack includes 3 engines, 4 starters, and 4 starter plugs The B6 6 is an upper stage engine for model rocket flight it can also be used as a single stage engine in lightweight rockets Recommended for use with the Alpha, Alpha III, Viking, Xtreme, or other