Transtar 4613 2 in 1 Primer Aerosol Black 15 oz each (2 Pack) 2-in-1 primers are a specialty coating designed for easy and convenient priming of metal and plastic parts. These primers help prevent rust and seal out moisture, while providing a smooth base for topcoat application on metal substrates. 2-in-1 primers also have excellent flexibility and adhesion properties that enable them to be applied to flexible and rigid parts. 2-in-1 primers are fast drying, provide superior fill and build, and are easy to sand. They are compatible with virtually all automotive paints.FeaturesFast drying and flexibleExcellent adhesion on metal or plastic substratesGood corrosion resistanceSands easily with superior fill and build