DJI Original Thrust Boosted 9450 Props Upgrade 9" Self-Tightening Propellers 4 Pcs - White for DJI Phantom 2, Phantom 2 Vision, Phantom 2 Vision+ Quadcopter DJI original product 9450 self-tightening propellers Compatible with DJI Phantom 2, Phantom 2 Vision, Phantom 2 Vision+ quadcopter Diameter / Pitch (inch): 9.4 x 5.0 / (24cm x 13cm); Maximum thrust (g): 660 (with 2212 motor KV920@12V) By using the second generation airfoil designed with computational fluid dynamics (CFD) in the DJI Propulsion Lab, it provides precious extra thrust and better power loading efficiency at the same time Package included: Counter-clockwise (CCW) Propeller x 2; Clockwise (CW) Propeller x 2; Free touch screen stylus pen is included (Random color shipped)