NEW Walnut™ Drawing Stick - For pen and ink wash drawings, a pen and a brush in one. Without changing tools, you can achieve the fluidity of a wash, the boldness of an expressive mark, or the calligraphic crispness of a drawing pen. The fine chisel nib of the pen is carved of bamboo. After dipping, its ink reservoir will supply about a 36-inch line of ink. The felt brush on the other end is shaped for a variety of stroke widths. It's not necessary to press down on the pen nib for ink to flow, use the same pressure as you would with a pencil. Walnut Drawing Ink left in the pen or brush will dissolve in water. Clean out other types of ink immediately after use.