Chameleon Color Tones Pens are alcohol-based marker that gives you the ability to change the color tone of your pen, to create stunning effects, smooth transitions, highlighting, shading, gradations and blending. The pen goes from a light hint of tint to rich tones of color, eliminating tonal gaps. The pen is compatible with other alcohol-based inks, is non-toxic, has a low odor, and ideal for all paper crafts, manga, graphic and fine art. Set 22pc Deluxe- Includes colors RD4, OR4, YO3, YL2, YG3, GR3, BG4, BL6, BL3, BV4, VO4, PR4, OL3, BR5, BR2, BK4, CG8, NU1, PK3, and NU3. There is a blending pen, detail pen, replacement nibs, instructions and idea guide. Comes in a plastic see thru case.