Designed for easy and convenient priming of automotive metal and plastic parts. This primer helps prevent rust and seal out moisture, while providing a smooth base for topcoat application on metail substrates. Transtar 2 in 1 primer also has excellent flexibility and adhesion properties that enable it to be pplied to flexible and rigid parts. It is fast drying, provides superior fill and build, and is easy to sand. It is compatible with virtually all automotive paints.