Creative, versatile, vibrant, and durable best describe KINGART® PRO Twin Tip Brush Pens. Create broad strokes, fine lines, and everything in between, simply by changing ends or brush pressure. Our pens are acid-free, non-toxic, and odorless. The caps are color-coded, air-tight, and anti-roll. The ink is water-based and blends easily. Use two or more markers to create unique shades and a colorless blender pen for watercolor effects. use these pens for any art project or inspired moment–and no messy cleanup! Great for Fine art, illustrations, doodling, journaling, hand lettering, calligraphy, and more. Ideal for fine art, brush lettering, faux calligraphy, illustrations, watercolor illustrations, journaling, and more!