The K'Nex Motorized Creations construction set offers creative building fun with 325 color-coded parts. With the included wind-up spring motor, children bring their creations to life. The set allows the construction of 25 different 3D models, including a turbo race car, a Ferris wheel, or a motorcycle. The special rods and connectors are easy to snap together, playfully promoting fine motor skills and spatial awareness. Thanks to the included step-by-step instructions, entering the world of STEM subjects is effortless. Perfect for curious young builders who want to create their own motorized vehicles and structures.