ONE APC 6 x 4 Speed 400 Electric PUSHER Propeller for electric motors. This prop can be used in pusher configuration on brushless electric motors.
For twin motor airplanes, it can be used as a counter rotating prop in conjunction with the standard rotation APC 6x4 Speed 400 Electric Propeller.
Each prop includes a set of adapter bushings for various size motor shafts and prop adapters.
Remember: Rotating propellers are dangerous. Stay clear of prop and wear eye protection.