Bianyo 12 Double-Tip Markers Flexible and versatile brush type markers that allow for soft and wide strokes and a thin tip perfect for straight, curved or writing lines. Perfect for coloring books, designs, comics, lettering, manga and much more. Includes 12 vibrant colors, perfect for coloring, illustrations, drawing, calligraphy and much more.  High quality and long lasting. Contain 12 markers, each have a 1-2 mm brush tip and a 0,4-0,8 mm thin tip. You will get a watercolor effect that you can dilute with a brush. Acid free nontoxic ink.