Grumbacher Quickdry Medium for MAX Water-Mixable Oil Paints, 2-1/2 Oz. Jar, #5932 Produces brilliant, lustrous transparent colors and glazes Holds precise lines and strokes during alla prima techniques without feathering or bleeding Completely compatible with conventional oil painting materials; however, it will not convert conventional oil colors into water-mixable oil paints For use with only Grumbacher MAX Water-Mixable oil paints; Not recommended for use with any other brand of water-mixable oil paints Made in USA