Tombow Dual Brush Pen, Black (66621) Two tips - a high-quality, flexible, nylon fiber brush tip and a fine tip Water-based ink is odorless, nonbleed, and blendable Blend easily using the Blender Pen, and create subtle washes by dipping tip in water Acid-free, non-toxic Black Two tips - a high-quality, flexible, nylon fiber brush tip and a fine tip Water-based ink is odorless, nonbleed, and blendable Blend easily using the Blender Pen, and create subtle washes by dipping tip in water Acid-free, non-toxic Color: Black