Faber Castell Art & Graphic Water BrushUnscrew, fill with water and start drawing! Perfect in combination with watercolor pencils as well as water soluble colors Ideal for wet on wet, glazing and dry brushing techniques (granulation) Practical for mobile use, when you are on the go (urban sketching) Cap can be used for scratching and scraping techniques (so called credit card technique) By application of gentle pressure on the brush barrel water will run down to the tip Water tank with a