Games&Tech 2 Pairs of 9" 9443 Propellers Self-Locking for DJI Phantom 2 FC40 2 Vision/2 Vision+ plus Cheerson CX-20 Compatible with: DJI Phantom FC40, DJI Phantom 2, DJI Phantom 2 Vision, DJI Phantom 2 Vision + plus, WLToys V303, Cheerson CX-20. Self-Locking Propellers. Silver is clockwise and black is counter clockwise. Includes 4 Propellers. 2 clockwise and 2 counter clockwise