Construct a snap-together build that fires paper airplanes over 30 feet, with the VEX Robotics Crossfire Airplane Launcher by HEXBUG. Send paper planes soaring through the air with the VEX Robotics Crossfire Airplane Launcher by HEXBUG. This STEM kit promotes basic engineering skills through the process of simple snap-together assembly. Pump the handle and watch as your paper plane astonishingly soars over 30+ feet!