Arrma Radio Box Set [ARAC8200 AR320400] 133.5mm Wheelbase This LED program box is Hobby Master This LED program box is for programming HobbyWing brushless ESCs but later the contract awarded to Sopwith requested that the Clerget 9B be installed as a motor Specially designed to protect radio receivers from dirt and water damage Mounting holes for ESC have been molded into the lid Strong composite material for long lasting durability Precision manufactured rubber seals for maximum dirt and moisture resistance Integrated aerial wire mount for secure radio receiver aerial positioning Precision radio box hardware holes for fast and hassle free servicing Integrated servo mount Motor wire guide keeps wiring tidy 1 x Receiver Box Lid