Yuneec Propeller Rotor Blade Sets A and B for Q500/ Q500+ / Q500 4K LUCKY 7 Drones-Authorized YUNEEC Dealer. Ships SAME DAY, 6 Days a week Priority Shipping. Yuneec Q500/ Q500+ / Q500 4K Typhoon Propeller Set-Rotor Blades A Clockwise Rotate (2pack) and Set- Rotor Blades B Counter Clockwise Rotate (2 pack). Total of 4 blades