Quart ONE HOUR ENAMEL is an incredibly tough fast dry acrylic enamel for interior and exterior use on surfaces that require quick return to service and an abrasion resistant finish. It is water thinned so it poses no fire hazard or objectionable odor. Wise Owl One Hour Enamel has a tough durable finish that is truly cutting edge. Its technology utilizes one of the strongest acrylic resins paired with superior synthetic pigments. It is absolutely an industrial strength finish.