Poorboys MasterCut is a professional grade heavy duty compound. Master Cut contains no wax or silicone, it is body shop safe, great for detailers or perfectionists and for vehicles new or old. It can safely be used on clearcoats and all paints. Master Cut is for machine use only. It is body shop safe and does not contain fillers. Master Cut has a long work time, which makes for safe and easy removal of swirls, scratches, oxidation and over-spray. Heavy duty compound removes deep swirl marks, scratches, overspray and oxidation Bodyshop safe - contains no wax, no silicone Proffesional grade heavy duty compound Contains no silicone or wax Use by machine only.