Holbein ranks as one of the world's finest lines of professional oil colors. The Holbein Artists’ Oil Paints rank as one of the world's finest lines of professional oil colors. The formulation of each color is modified individually to compensate for the inherent differences in the working characteristics of pigments, for an even consistency across the entire palette of color. - Holbein Artists' Oil Color - Polyazo Yellow, 20 ml tubeHolbein Artists Oil Color, POLY AZO YELLOW 20ML -