Product Info: - Part: Brake Drum - Position: Rear - Material: Steel - Outer Cooling Fins: No - Programming Required: No - Vintage Part Indicator: No - Bolt Circle Diameter: 114.3 millimeters (4.5 inches) - Outside Diameter: 252.2982 millimeters (9.933 inches) - Nominal Diameter: 202.9968 millimeters (7.