An essential addition to every artist's color palette. This set of 4 opaque neutral gray inks are evenly spaced out at 20%, 40%, 60%, and 80% of black on the value scale. These are ideal for the black and gray artist looking to create a smooth opaque gradation, but are also extremely useful for any color artists looking to tone down colors without having to shift in color hue. Adding this set to an artist's already established color palette allows for an artist to extend their color palette with a wider range of tones and shades.