Black dual brush marker by Tombow. This dual brush pen has a versatile and flexible nylon fiber brush tip on one end that creates medium or bold strokes by simply changing brush pressure. The fine tip on the other end is for smooth straight lines or writing. It is a great pen for brush lettering as it has a firm but responsive brush tip.
The water based ink is blendable, odorless and non-bleeding. Acid free and non-toxic.