KOOTAI J3 CUB 505MM BRUSHED 3CH With GYRO EPP RTF - MODE 2Features 505mm Wing span. Reduced according to J3 CUP ratio, height simulator, use of super strong and super tough EPP material, electronic stability enhancement system, more precise hand feel, more stable flight, optimized structure to reduce damage. The propeller is designed using aerodynamic principles to provide strong power and stability. It has high efficiency, low power consumption, and long flight time. The blade is made of ABS+PC composite