This is one new knob for some Cadillac radios starting in 1997. You get what you see in the photo. It is smooth in appearance and is made of plastic. If you are looking for the rubber textured version with nubs on it, we have that in a separate listing. These parts are brand new and have never been on a radio. There are no returns on this item. You should be able to tell from the picture what you're getting. Do not purchase from this listing and ask for something different. We cannot accommodate substitution requests.