These water-soluble pens from Staedtler will make a great addition to your art and craft projects. You can mix the intense dye-based ink with water to create watercolor effects. You can use them for illustration, detail work, manga and expressive writing.Details: Includes assorted colorsBrush tip 1.0 mm to 6 mm Fine tip 0.5 mm to 0.8 mm 36 double-ended pens Durable foam brush tip