These are Chrome wheel skins designed to go over GM Factory wheels. They fit 99-2016 Silverado, Yukon, Sierra, Etc. that have 8 lug painted wheels. The Chrome effects part number is CEW1008-PS. It makes your wheels stand out to look like chrome. They fit perfectly over your stock wheels. These are new and have never been installed. Give me a call. I used to operate an accessory business and these are leftover stock.