1 shot hardener in an 8 oz (1/2 pint) size speeds up drying time for 1 shot paint. Use with lettering lasures, pearl enamel, enamel background & color bulletin. This hardener can also improve adhesion, extend the life of our color and increase gloss retention. Required for use on enamel or urethane topcoats over catalyzed 1Â shot. Made in the USA