brake drum 1. Material: Cast Iron & SG Iron 2. custom bulit trailer parts idler hubtrailer Hub: custom built metal partsMaterial: Casting Iron, SG Iron,Parts Number: H544, H655, H865,140MM,150MM,190MM4.5, 4.75", 5.5" or 5.55 BC , etc.Bearings: 44610/68111, 25520/15245, 25520/14276, 44610/44610, etc.Finish:Painting, Zinc Plating, Hot Dip Galvanizing, Powder Coating.We are custom built manufacturer ...