YKS 2 Pairs 9" 9443 Full Carbon Fiber Self-Tightening Propellers for DJI Phantom 3 & Phantom 2 Vision+ Suitable for DJI Phantom 3 series, DJI Phantom 2 vision+ & DJI Phantom 1. Made of Full Carbon Fiber, durable, ultralight and great intensity. Self-Tightening,it is very safe in the flying. Length:24cm / 9.4 inch, thread pitch: 11cm / 4.3 inch Package include: 2 x CW Props, 2 x CCW props