This set of six Dual-Tip Brush Pens from Tombow are preferred by professionals. Each brush pen has a flexible brush tip and fine tip in one marker. Brush tip works like a paintbrush to create fine, medium or bold strokes; fine tip gives consistent lines. The water-based ink is blendable and the resilient nylon brush retains its point stroke after stroke. Dual Brush Pens are ideal for fine art and illustrations and are perfect for every artist's masterpiece.