A grey, fast drying, easy sanding, high build primer and filler designed for priming and filling over bare steel and body fillers. Also for use on stop and finishing putties, fibreglass repairs, scratches, minor surface imperfections and stone chips. This Primer Surfacer is ideal for use under Colorpak automotive Acrylic Lacquer and Colorpak single pack air dry Enamel finish coats. Application is with 3 full wet even coats allowing 5-10 minutes flashoff time between coats. Air dry time is 5-7 hours at 25.