Brake Assembly, Trailer Axle, Axle Assembly manufacturer / supplier in China, offering 12" Electric Brake Drum with Inner & Outer Bearings Galvanized Finish, Adr Compliant, Heavy Duty 4 Bolts 12.25*3.375" Trailer Hydraulic Brake, 12" Electric Brake Drum for Australia & USA, Galvanized or E-Coated in Brake Drum and so on.