Chameleon Art Products, Chameleon 5-Pen, Cool Tones Set PROFESSIONAL QUALITY - Our alcohol-based pen is permanent on most surfaces, non-toxic, and low-odor. MORE FOR LESS - Using our special mixing chamber, each pen goes from as light as a hint of a tint to rich tones, eliminating tonal gaps in your collection so you can do more with less. ONE PEN TWO NIBS - Our pens feature a double-ended design, a Japanese SuperSoft brush nib and bullet nib, ideal for paper crafts, manga, graphic & fine art. LONG LASTING - Keep your pens top notch with our replaceable nibs and refillable inks PRODUCE OVER 25 COLORS - This set of 5 vibrant color tones produce over 25 color tones giving you the ability to create stunning effects such as 3D, smooth transitions, highlighting, shading, gradations and blending, all with one pen!