SKU#: 406-4577\r\n\r\n\r\nBuild a Single Gear Racer from over 180 VEX Robotics Pieces!\r\n\r\nIncludes multiple gear sets, rubber bands, and wheels\r\nTeaches children about potential and kinetic energy\r\nCompatible with educational VEX IQ pieces\r\nSTEM based construction kit\r\n180+ snap together pieces\r\nAges 8 years and up