K'NEX 23012 Imagine Power and Play Motorised Building Set - 529-Piece STEM Learning Toy for Kids 7+Ignite your child's creativity and curiosity with the K'NEX Imagine Power and Play Motorised Building Set, a dynamic STEM learning kit that combines hands on construction with real motorised action. This 529 piece building set lets kids design and build 50 unique models, including 25 motorised creations like race cars, carousels, rockets, and more, bringing imaginative play to life through engineering and motion. Toy Features: Motorised building set