Spark Their Imaginations! Does your child dream about creating the next greatest invention? Want a fun, exciting way to keep them entertained? Introducing The Discovery #Mindblown Diy Toy Model Engine Kit. Let your kid get their hands on this Diy mini replica of a classic four cycle internal combustion gasoline car engine! This intuitive, engaging gadget allows children to play around with the valves, cylinders, cranks, and pistons all in one kit. It also delivers powerful action using the provided cables and battery pack distributor for nonstop fun!