Searched Spokane all day yesterday. Auto shops, paint supply, machine shops, performance engine builder. Best I could come up with is 2500 grit wet dry. Would this work with oil and a very light touch. Mention 7000 grit and they start looking around for the people with the butterfly nets coming to retrieve you. DonDon, you can use 3,000 grit or finer just don't polish very long with it. 3m makes a 7,000 grit but I don't know if you can find it locally. Do you have any parts stores that handle a lot of automotive paint supplies, they should have really fine grit wet or dry.