4007 - Hardener is designed to accelerate drying time for all 1 Shot Background, Lettering and Pearlescent Enamels as well as Chromatic Bulletins.

1 Shot Hardener can, in many cases improve adhesion qualities as well as extend color life and increase gloss retention. 4007 Hardener is also required in anticipation of using any enamel or urethane topcoats over catalyzed 1 Shot.