DJI Phantom 4 Series 9450S Quick Release Propellers, 2 Pairs Compatible with phantom 4 only 2 pairs of propellers: 2 clockwise and 2 counterclockwise propeller Basics: Each propeller weights 11g, diameter and screw pitch is 9.45  5 inches DJI phantom 4 9450S quick release propellers DJI phantom 4 visionary intelligence, elevated imagination