For removing and replacing most sizes of press-fit ball joints found on domestic and import rear wheel drive cars, as well as Ford, GM and Dodge 2 and 4 wheel drive pickups, vans and SUVs. Product Features:Allows change out of ball joint without removal of control arm. Can be used to remove and replace U-joints. Storage case includes laminated Instruction Sheets with Photos showing the tool in use.All Instructions developed by a professional repair manual writter.