Kit comes with everything needed to add brakes to a trailer.Includes: 6600 lb. disc brake actuator, back up solenoid, two eliminator 10" vented disc brakes and a single axle brake line kit.Kit Includes a pair of GalvX coated vented rotor disc brakes, disc brake actuator and a brake line kit, brake hoses, brass fittings & attachment hardware (Brake fluid not included) Fits 13", 14" and 15" wheels.