Fibreglass Evercoat 400 Polyester Glazing Putty - 20 oz. Can 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 Proper usage reduces risk of staining Blue cream hardener included