Estes 1607 B6-6 Model Rocket Engine Pack – 3 Engines with Starters & Plugs It also has a wide

It also has a wide visual angle LCD display with a white backlight

Measures 2-5/8" width by 7-1/2" height by 1-25/64" depth

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Size X-Small

Estes 1607 B6-6 Model Rocket Engine Pack – 3 Engines with Starters & Plugs It also has a widePLEASE 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