Real Brush Pens | 36 Colors | Dual-Tip Watercolor Markers with Flexible Nylon Brush TipsSet of 36 Vibrantly Colored Dual Tip Water Based Markers We designed our dual tip coloring brush pen set so that you can create fine and broad strokes with one double ended pen. Our water soluble ink is vibrant and readily blends and layers. We included a water brush pen for creating more watercolor effects or soft subtle color washes with these watercolor paint markers. Artists use our flexible nylon brush illustration pens for coloring, fine art,