Floureon 4 Pcs Self-Tightening White CW CCW Propeller Prop 9" 9443 for DJI Phantom 2 Vision + plus 9.4 x 4.3 Inch Size: 9.4 x 4.3 inch Weight: about 20g / 1 pairs Mounting method: built-in lock nut, hand driven installation. Compatible with: DJI Phantom 2 Vision; DJI Phantom 2 Vision + plus, DJI Phantom 3 Advanced&DJI Phantom 3 Professional, Cheerson CX-20