1 Shot zz6000 Reducer is the standard reducer for 1 Shot lettering and bulletin enamel, thinning the paint to brush or spray viscosity for hand lettering, striping, and panel work. It extends open time and improves flow for clean strokes without dulling gloss or weakening adhesion. Add roughly 5 to 10 percent for brush and up to 20 to 25 percent for spray. Supplied in Quart.