A set of FOUR (4) Pontiac factory center caps.Measure about 7 3/4" across the back.Black plastic.Five lug holes.Manufacture part # 10023936 and # 10031312 cast on back and this # MUST be matched for correct replacement.This is a good used set with some light scratches / scrapes and marks.The original finish is VERY faded and worn dull due to time.Oxidation and corrosion.Staining that does not polish off.Finish faded different shades of black.Driver car quality.On a scale from 1 to 10, these rate a "6" in condition.Buyer to pay shipping with a flat rate of $15 within the continental U.S..Elsewhere there are additional charges.Accept most methods of payment.California buyer to pay state sales tax.