This pair of Quick Release Propellers for EVO Drones from Autel Robotics can be used to replace damaged or lost propellers or to simply stock up your kit so your next aerial adventure isn't cut short due to a damaged prop. This pair of propellers feature Autel's quick-release design for speedy prop changes, and a secure locking feature to keep them stable during flight. You will receive one clockwise and one counterclockwise propeller. These propellers are only compatible with the original Autel EVO, not the EVO II.