About this product: Dual-headed Brush Markers: These colored markers feature a dual-head design with a 1-2mm brush tip and a 0.4mm fine tip, allowing you to create medium or bold strokes by varying the brush pressure while still using fine-grained brushwork. The 0.4mm fine-tip markers are great for sketching, tracing, and detailing, while the 1-2mm brush tip markers are ideal for coloring large areas. The dual-headed design fully meets your needs in various situations. Water-based Markers: The brushes used for coloring are made with water-based ink, which is acid-free, non-toxic, and easily cleaned with water. These colored markers for adults feature quick-drying properties to keep writing smooth and prevent issues like skipping words or fading. To maximize the performance and longevity of your colored markers, it is recommended to tighten the cap immediately after each use to prevent the ink from drying out. 24-Color Markers: These dual-ended markers are made with 24 commonly used colors to ensure you never have to use the same amount of paint every time for optimal color results. These pens will unleash their full potential throughout your creative process, powerfully stimulating your imagination and creativity, allowing you to create more exciting work.