5068 Polyester Premium Finishing Putty is a Polyester Premium Finishing Putty spreads effortlessly and self-levels to a smooth, high density and pinhole free surface that is easy to sand to a seamless featheredge. 5068 contains a new adhesion Additive that speeds the cure and improves adhesion to zinc coated auto body panels. Use 5068 over body filler, sand scratches, pinholes, aged OEM topcoats, steel, aluminum, galvanized steel, fiberglass and other substrates for stain free undetectable repairs.