Collinite Fiberglass Boat Cleaner #920 Combo Collinite Fiberglass Boat Cleaner #920 easily removes dirt, film, oxidation, oil, grease, rust and exhaust stains from fiberglass finishes. Fiberglass Boat Cleaner restores the original color quickly without hard rubbing or buffing and leaves a chemically clean surface to which Collinite waxes can bond perfectly. Collinite Fiberglass Boat Cleaner Increases long-lasting brilliance and performance of protective wax coatings. Collinite Fiberglass Boat Cleaner #920 works like a prewax cleaner to remove oily films, and other contaminants, and leave a clean slate. Wax bonds to this clean surface for a more effective, longer lasting finish. Removes the white, chalky oxidation that occurs in the outermost gelcoat layer. 16 oz. Combo includes yellow applicator pad and microfiber towel.