Electric Brakes for both turbine and edf jets. Includes wheels, brakes, tires, and controller. 65mm tire, 5mm axle fits HSDJETS. Requires one receiver channel and operating voltage between 7.4v (2S Lipo) to 22.2v (6S Lipo). Can be powered by a separate battery or use the RCJ Power Pass Through Adapter (not applicable above 6s voltage).