Chameleon Pens are much more than a normal marker - they give you the power to change colour and simplicity to your art. Each pen goes from as light as a hint of a tint to rich tones, eliminating tonal gaps in your collection.Features & Benefits For simple, seamless, colour gradations! Create depth, dimension, highlights, shading and shadows... all with one pen! Built to last, Chameleon Colour Tones have nearly twice as much ink as a regular marker pen Can also be used like a traditional marker Permanent on most surfaces (including: fabrics, glass, plastic and wood) Compatible with all other alcohol-based pens and inks Specification Colours: Neutral Grey 4, Cool Grey 5, Cool Grey 9, Warm Grey 3, Warm Grey 7