Heavy duty rubbing compound is formulated to quickly & effectively remove surface scratches, oxidation, paint blemishes and contaminants from any paint surface. Great for any paint surface that needs a deeper cleaning HD Rubbing Compound is a all around good general compound. safe for Boats and RV's this compound covers a lot of different surfaces and is safes on most all finishes. HD Rubbing Compound is not made with a super heavy grit that you can fill by hand very easy which allows for less scratches while actually cutting and cleaning the surface just as fast and affectively as gritty HD compounds. Heavy duty rubbing compound is silicone and wax free and is safe for all body shops. no fillers or anything added. We stamp it BODY SHOP APPROVED Walt's HD Rubbing compound is best to use with a wool or foam cutting pad . For heavy cutting use white Wool AF-753 pad or a orange HD AF64H foam pad. When it comes to medium compounding use a yellow wool pad in the 753y or a yellow foam pad in the Af-300 or AF-63H pad. Heavy duty rubbing compound can be applied by hand or by machine. Make sure you wash the surface first and allow time for it to cool down first. For quicker more efficient compounding clay bar the surface first so that HD Rubbing Compound can go to work immediately on the paint surface. Wash car first. Do not apply in direct sun light. Use buffer at 1000 to 1400 RPMS.