The two-component, UHS spray filler 1C is very easy to apply. Is has a very good verticability, It is quick air-drying and easy to sand. Compared to traditional systems, the very high solid content gives outstanding filling power, up to 80/100 microns per coat. It contains active pigments with anticorrosive properties. Gelson suggests using 1C with Walcom gun Slim. Then, sanding with Flex Ore 3 sander in combination with Kovax Maxfilm super tack P320