Autosurfacer Rapid is a high build, two-component, isocyanate free product that is used as a sanding primer surfacer. Provides fast air drying and baking qualities. Usable under all Sikkens primer sealers and top coats. Autosurfacer Rapid provides excellent application and sanding properties and very good enamel-hold out in combination with all Sikkens topcoats.