Models include a dune racer with tank treads that rambles over rough terrain a four-wheel-drive ATV with a belt drive and high-grip tires a conveyer belt and many more. Comes with a 40-page full-color experiment manual with step-by-step assembly instructions and scientific explanations. Manufacturered by Thames & Kosmos. Battery-powered motor box brings your models to life! A parents' Choice Recommended award winner Build 10 motorized models of different kinds of vehicles and machines while learning about belt Drives wheels and tank treads.