Trailer Axle, Trailer Jack, Trailer Brake manufacturer / supplier in China, offering 250X40 Knott Brake Drum with Bearing (39X72X37) PCD 5X112, 250X40 Knott Style Brake Drum with Bearing (39X72X37) for 1800kg Trailer Axle, PCD 5X139.7, Al-Ko Style Brake Drum with Bearing for 1350~1500 Kg Trailer Axle PCD 4X139.7, 200X50 and so on.