This is the Self-Propelling Cart from the Academy Hobby Models Da Vinci Machines Series. Suitable for Ages 10 & Up. FEATURES: First robot-cart in history designed by Leonardo da Vinci Spring powered No glue or paint required Pictoral instructions INCLUDES: One plastic model REQUIRES: Assembly Hobby knife (RMXR6909) Sprue cutters (HCAR0630) Adult Supervision tlh 5/18/10