K'NEX K'NEXosaurus Rex Building Set Includes 200+ classic K'NEX pieces|Features a battery powered motor for added fun!|Includes an incredible second model, Megasaurus| Ages 7+|Rods and Connectors made in USA|2 "AA" batteries required but not included Ages 7+|Rods and Connectors made in USA|2 "AA" batteries required but not included Includes 200+ Classic K'NEX pieces Features Battery Powered Motor Requires 2 "AA" Batteries (not included) Recommended for Ages 7+