The Quick Release Rotor Adapters for 1345s Quick Release Props from DJI are required by the 1345s Quick-Release Props. The adapters screw onto the motor, where they permanently reside. They allow the props to be toollessly twisted on or off. The adapters work with the Inspire 1 motors as well as the motors for the E800 Tuned Propulsion System. A pair is included, one for a clockwise (CW) and one for a counterclockwise (CCW) motor.