We have many years of enperience in producing brake drums and wheel hubs. 1.Meterial:QT450-10 2.Weight:20kg-40kg 3.Mechanics performance: Mail body degree of hardness:195-250HBS Testing rod tensile strength:>=250Mpa 4.Design As per customer's drawing As per customer's sample 5.Packing Wood pallet and Waterproof membrane As per customer's requirement