DJI Original 22 Quick Release Rotor Adapter Lock (Cw+ccw) for Tuned Propulsion System E800 3510 Motor,1345 Carbon Fiber Quick Release Propeller Compatible with E800 3510 motor and 1345 carbon fiber quick release propeller Patented rotor lock mechanism ensures reliable locking and tool-free mounting and release at the same time Fool-proof design for CW and CCW blades Free touch screen stylus pen is included (Random color shipped) Package included: CW Quick Release Rotor Adapter x 1; CCW Quick Release Rotor Adapter x 1 (Note, quadcopter requires 2 sets)