Our Studio Twin-Tip Markers are perfect for beginning and aspiring artists looking to hone their techniques. The extra long flexible nylon tips are great for creating both fine lines and broad strokes in a smooth flow of water-based ink that is odorless, acid-free, and non-toxic. The chisel tip provides the edge and are used for bold lines for maximum impact when artists want dark, bold pen strokes. The vivid colors blend easily to create even more colors and effects in sketches, drawings, and paintings. Our watercolor brush pens packed with rich & vibrant color! Great for the entire family. The markers are excellent designing and decoration. Great for coloring books, doodling, manga, comic illustration and calligraphy. Kingart Studio Watercolor Brush Marker Sets come in reusable plastic storage cases.