Parrot AR Drone 2.0 Pinion and Spur Gears by UltraFlight&trade; Upgraded Design and Material Black Parrot AR Drone 1.0 & 2.0 Repair Gears Replacement pinion and spur Spare parts Made from a much stronger material than stock gears Do not wear down like stock gears Better design allows for stable flight Made of high quality Nylon material Lighter and Stronger than stock gears