Electric Brakes for both turbine and edf jets. Includes wheels, brakes, tires, and controller. 60 and 65mm size, 4mm axle fits most 80 and 90mm edf Jets. 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).