Front and Rear Ceramic Brake Pad kits ACDelco for Chevy GMC Sierra 2500 3500 HD. These have been on the shelf for about a year I got them for a 2019 gmc 2500 hd 4x4 with the 6.6 duramax. It is up to you to check on compatibility for other years. I no longer own the truck is why I’m selling these. This is for both sets front and back. Thanks