Easily removes dirt, film, oxidation, oil, grease, rust and exhaust stains from fiberglass finishes. Restores the original color quickly without hard rubbing or buffing. Leaves a chemically clean surface to which Collinite waxes can bond perfectly. Increases long-lasting brilliance and performance of protective wax coating. Apply the 925 fiberglass boat wax or the 885 Fleetwax after the 920 has been applied for maximum protection.