Parrot AR Drone Quadcopter 2.0 and 1st VGE Upgrade Drive Gear Bearings 8pcs 100% brand new and high quality! This ball bearing set is a direct replacement for the Ar Drone. The Ar Drone comes with 8 brass bushings (2 on each gear shaft). By replacing your bushings with this bearing set you will increase battery time and brushless motor life ( X 4). This conversion will allow your Drone to operate more efficiently.