The Tombow MONO Drawing Pen Colors, 8-Pack provides a full set of rich, fade-resistant colors with the same precision as the original MONO Drawing Pen. Water-based pigment ink flows smoothly and dries quickly to prevent smudging. Durable metal nib ensures steady ink flow and clear view of your work. Designed for use on drawing, marker, watercolor, and mixed media paper. Ideal for illustrations, technical drawings, manga, anime, lettering, and journaling. Colors include: Black, Red, Yellow, Brown, Green, Blue, Purple, and Pink. Available in size 03.