A. Dual-tip Design: This dual-headed marker has a fine tip and a soft brush tip, adding more fun to your artistic creations. You can use the 0.4mm hard fine tip to draw very thin lines, and by adjusting the pressing force of the brush tip, you can create thin, medium, and thick strokes. B. Vibrant Colors: It comes with 24 classic and vivid colors, which can meet many of your needs in adult coloring books, bullet journals, scrapbooks, planners, comics, calligraphy, coloring, writing, note-taking, sketching, painting, etc. C. Smooth Writing: Each pen provides a smooth writing experience without ink bleeding. It uses water-based ink, which has good fluidity, no odor, is acid-free and non-toxic, dries quickly, and is relatively safe for children. D. Excellent Quality: The 0.4mm fine tip is suitable for detailed contour outlining and drawing thin lines, while the 1 - 4mm elastic nylon brush tip is good for coloring and shading. These dual-headed brush markers have a sufficient amount of ink, so you don't need to worry too much about running out of ink quickly. E. Great Gift: These dual-headed markers are quite suitable as holiday gifts for adults, children, teachers, students, or artists. It comes with a transparent case for easy carrying and storage. If there are any defects or damages in your order, please contact us at any time, and we will offer free replacement or a full refund service. They can be used for handwritten font creation, sketching, calligraphy, school schedule planning, diary keeping, coloring, etc. The 1 - 4mm brush tip paired with the 0.4mm hard fine tip can create thin, medium, and thick strokes by adjusting the pressing force of the brush tip. This is a set of 24 vibrant art markers that do not bleed or leak ink, are non-toxic, write smoothly, and are acid-free. It is a good choice as a Christmas gift for artists, students, children, etc., for art and handicrafts, design, etc., and is also a decent supplementary option.