FEATURES A 2K High Viscosity Polyester Putty Excellent for Final Skimming of Polyester Putty Repair Can be Directly Applied onto Minor Imperfections on Bodywork Prior to Over Painting Great for use on horizontal panels. BENEFITS Very Easy To Sand High Density Ultra Smooth Tack Free Stain Free Suitable For Infra Red Can Be Used On The Following Surfaces: Bare Steel, Galvanized & Other Zinc Coated Steels, Aluminium, GRP, SMC, Fiberglass and Most Plastics & Previously Coated Surfaces.