Emorefun 2 Pairs Propellers Rotor Blade Sets A and B Red for YUNEEC Typhoon G Q500 Q500+ Q500 4K RC Quadcopter Drone These rotor blades will bring a new sense of style to your drone. The typhoon propellers have been designed to be the most efficient and silent injection molded propellers on the market. Their built in locking hub makes installation easy. Simply twist on the A propellers in a counter clockwise motion and the B propellers in a clockwise motion. They make a great replacement to swap out your current propellers, or a backup in case they get damaged. Bundle includes 2 A sets and 2 B sets, resulting in a two full sets of 4 individual propellers and o-rings for your Yuneec typhoon quadcopter drone. Compatible with the following Quadcopter typhoon drones: Q500, Q500+, Q500 4K, and G. Quadcopter drone not included.