Tombow 56621 Dual Brush Pen, N15 - Black, 1-Pack. Blendable, Brush and Fine Tip Marker Dual tip marker features both a flexible brush tip and firm fine tip Resilient, flexible nylon tips Blendable, water-based ink Features flexible nylon fiber brush tip on one end and a fine tip on the other end Brush pressure can be used to create medium or bold strokes Ink is water-based blendable, odorless and non-bleeding Acid free and non-toxic Imported