Before painting, remove rough sanding scratches with this glazing putty.Ultra-smooth surfacing putty can be applied over roughly sanded fiberglass, metal or filler surfaces.Key featuresCan be applied directly to bare metal and fiberglassEasily fills grind marks, pinholes, low spots and other minor imperfectionsGreat adhesion to galvanized steelNo shrinkage and easy dryingSpecificationsType: Polyester PuttyCure Time: 5-6 Minutes (Sandable: 20 Minutes)Color: Grey