This listing is for a set of 4 OEM 1999-2008 Chevy Silverado Avalanche Tahoe Suburban Center Caps in used condition. The diameter is 7 3/4".Center caps have scratches and scuffs and the clear coat is damage in some places, they still could be good for daily driver. Please look at pictures for condition and use part number to make sure these center caps are right for your truck. Thank you.