Changing the way you think about marker pens. Chameleon color tones bring color control and simplicity to your art. Create stunning effects such as 3d, smooth transitions, highlighting, shading, graduations and blending, all with one Pen. Each Pen goes from light as a hint of a tint to rich tones, eliminating tonal gaps in your collection. Professional quality alcohol-based ink, refillable, replaceable super soft Japanese nibs, double-ended, permanent on most surfaces, compatible with all other alcohol-based inks, non-toxic and low odor, ideal for all paper crafts, manga, graphic and fine art.