This product is a set of four 20" OEM factory stock wheels rims made by Chevrolet for the Silverado 2500 and 3500 HD models. The wheels have a bolt pattern of 8X180, 8 bolts, and a rim width of 8.5". They are made of aluminum with a one-piece cast construction and a clear-coated finish. The wheel style is 6 spoke with a bright polished silver color. The package includes a wheel center cap and the manufacturer part number is OEM.