Self-tightening propeller blades engineered for Yuneec Typhoon G, Q500, Q500+, and Q500 4K quadcopters. This complete set includes both A and B propeller pairs for a full replacement of all four rotors. The vibrant red finish keeps your drone looking sharp while maintaining peak performance. Self-tightening design prevents loosening during flight, ensuring stability and safety. Perfect as a backup set, direct replacement, or performance upgrade. Installation is straightforward—no special tools required. Restore your quadcopter's flight capability with these reliable, durable propellers.