O-XOXO Propellers for DJI Phantom 3 - Self-tightening 9450 Propellers - 2 Pairs Self-tightening design keeps the propellers securely to each motor Compatible with Phantom 3 Professional and Phantom 3 Advanced Durable plastic construction provides both lightness and rigidity Includes two pair of propellers: 2 clockwise and 2 counter-clockwise propeller. Basics: each propeller weights 13g, diameter and screw pitch is 2412.7cm.