This kit includes Autosol - the best polishing paste for metals such as Chrome, Copper, Brass, Nickel, Stainless Steel, and Aluminum. For use on cars, trucks, motorcycles, bicycles, lamps, furniture, etc. It safely and easily removes oxidation, corrosion, stains, and rust. It produces a brilliant reflective luster and leaves an invisible protective coating to ensure a long-lasting shine. Shanks are 1/4" round and continue with hex shape so it does not slip on your drill. Features: Includes 75mL Autosol - Clean & Polish recessed areas 3 High Quality Felt Bobs different sizes 1/4" shank with hex end to eliminate slipping