Creative, versatile, vibrant, and durable best describe KINGART PRO Color Brush Pens. Create broad strokes, fine lines, and everything in between, simply by changing brush pressure. Our pens are acid-free, non-toxic, and odorless. The caps are color coded, the color codes are imprinted on the barrels, the caps are air tight, and anti-roll. The ink is water-based and blends easily. Use two or more markers to create unique shades and the colorless blender pen for watercolor effects. use these pens for any art project or inspired moment–and no messy cleanup! Ideal for drawing, illustrating, designing or sketching.