The set contains 30 pieces of Chameleon pens + accessories (tweezers, set of spare tips). The pens are stored in an elegant, practical case - a case with a strap. CHAMELEON COLOR TONES - toning pens are certified pens based on alcohol. The pens are double-sided, the refills and tips are interchangeable. The pen is easy to use. Ideal for professional illustrators, graphic artists, artists or casual colorists. CHAMELEON toning pens are suitable for creating 3D effects, smooth transitions, highlighting, gradation, mixing, shading - all with one pen! With each pen you achieve smooth transitions from soft to rich tones.