Yaviten 1pair 9443 Carbon Fiber Self-Tightening Cw CCW Propellers Props Self-Lock 9.4 X 4.3 Propeller Set for DJI Phantom 1 Fc40 2 Vision/2 Vision 1 Pair 9443 Carbon Fiber Propeller self-lock for DJI Phantom 2 / Vision & Vision+ 9.4x 4.3 inch 3K Carbon Propeller Set (One CW, One CCW) W/ self-lock nut Mounting method: built-in lock nut, hand driven installation Material: Carbon Fiber Color:Red+Black,Silver+Black