Feature●FLY WITH A PEACE OF MIND- With no propellors, there is no POWERUP. Keep your spare propellor kit by your side and fly worry-free! Our propellers are quick and easy to replace in the field to keep the fun going.●PUSH IT TO THE LIMITS- This kit is perfect for individuals who test and fly our products often. Because propellors are the most sensitive part of every plane, this kit offers security and reassurance if any accident were to happen.●HIGH-GRADE PROPELLERS- Made with Dupont-reinforced nylon, our propellors are built for accuracy and a high thrust-weight ratio. This spare kit comes with 10 left and 10 right propellors.●LONGEVITY- While our POWERUP planes are designed to be extremely durable and withstand crash landings, it’s important to treat them as you would any equipment. The more it’s used, the more it will need maintenance.●STEM PROJECT- Perfect for teachers who need extraDescription Stay protected while flying your smartphone-controlled paper airplane with this bundle! Made with the frequent flyer in mind, this kit is a smart choice for pilots who want to take their POWERUP 4.0 to its limits. Our spare propellor kit is made up of Dupont-reinforced nylon designed for accuracy and high performance. Whether you are running a STEM class or are just an RC hobbyist, give yourself a peace of mind with this bundle!