20 oz. Can be applied directly to bare metal, body filler, fiberglass, and fully cured sanded top coats. Easily fills grind marks, pinholes, low spots, and other minor imperfections. Contains ZNX-7 for superior adhesion to galvanized steel, bare steel, aluminum, SMC, E-Coat, and OEM finishes. No shrinkage. Easy dry. Reduces risk of staining. Blue cream hardener included.