Collinite No. 920 Marine Fiberglass Cleaner is a heavy duty cleaning compound removes film, moderate oxidation / discolouration / water spots and stains from aged or mildly neglected fibreglass surfaces. Helps restore original colour and gloss while facilitating the easy application of Collinites last step protective waxes; improving wax bond, spread and durability. Exclusively for exterior marine and aeronautical detailing use. Not for clear coat paint.