Marine 31 Gel Coat Heavy-Cut Oxidation Cleaner Marine 31 Gel Coat Heavy-Cut Oxidation Cleaner is the solution for chalky, heavily oxidized gel coat surfaces  standard and painted. Marine 31 pioneered a gel coat specific diminishing abrasive that quickly and effortlessly removes heavy oxidation, scratches and chalkiness without scouring or hazing the finish. Marine 31 Gel Coat Heavy-Cut Oxidation Cleaner can be applied by hand, circular polisher or dual action orbital polisher. Marine 31 Gel Coat Heavy-Cut Oxidation Cleaner is harbor safe and eco-friendly. 16 oz. Made in USA