Estes 1691 E12-0 Booster Stage Model Rocket Engines, 2 Count – 24mm, with Starters & Plugs this invention kit provides endless

this invention kit provides endless hours of fun

5mm button height

bring it anywhere

Build exciting projects and toys using the included colorful instruction book

folding case for easy storage and mobility

Estes 1691 E12-0 Booster Stage Model Rocket Engines, 2 Count – 24mm, with Starters & Plugs this invention kit provides endlessPLEASE NOTE: These are large (24mm diameter) booster stage engines for multi stage model rockets. Please refer to the instructions that came with your rocket (or the rocket's product description) to determine engine compatibility. Take your two stage flights higher with the Estes E12 0 booster a reliable 24 mm booster stage engine built for powerful, predictable separation and climb. Perfect for hobbyists who want an easy to use boost to add punch to