DJI Quick Release High-Altitude Propellers for Inspire 2 Brand New Includes Manufacturer's Warranty Product # CP.BX.000193 The DJI Quick Release High-Altitude Propellers for Inspire 2 are designed with a larger propeller pitch that increases the copter's propulsion force at altitudes with thinner air. Included is a set of two replacement propellers one that works clockwise, and the other counterclockwise. Enjoy improved performance with your Inspire 2 at altitudes from 8,200 to 16,400 ft. with these High-Altitude Propellers. Quick Release High-Altitude Propellers for Inspire 2 Features Propeller Pair Inspire 2 Part 11 For High-Altitude Operations Improves Performance 8,200-16,400 ft Operating Altitude Increases Propulsion Force