Experience the thrill of flight from your living room or wherever else you may be with Aero Propsª! Once you begin flying, you won't be able to put it down. Aero Propsª are the original and best quality flying propeller toys available! Kids and adults alike can fly these straw propeller whirligigs up to 30 feet high and experience hours of endless fun! Fly by yourself, with a friend, play catch, make a target, juggle, do boomerangs, curve shots, and so much more. These spin flying toys are 100% Made in the USA since 1991 and engineered for optimum flight performance. Simply place the dowel between your hands, push your right hand forward while pulling your left hand back slightly, and watch it soar! Control your Aero Propsª by pointing the propeller in the direction you want it to fly. Aero Propsª come with educational flight instruction manuals that teach the basics of how to fly, complete trick shots, and go over the scientific principles of flight that make the toy fly freely! Scientific principles include AIRFOILS, MOMENTUM, INERTIA, MASS, PRESSURE, THRUST, LIFT, FRICTION & GRAVITY. Aero Props are the perfect interactive teaching helicopter spinner tool to teach the principles of flight while having fun. This pack of Aero Props comes with a 100% satisfaction guarantee. If you're not happy for any reason, please contact us and we will take gladly care of you. Happy flying!