Safe and easy to use: Super markers are completely safe because they are non-toxic, water-based, and acid-free. Kids, adults, art students and teachers all love our marker pens because they are fun, easy to use, and provide great visual effects Double tips: wide and delicate, suitable for precise highlight and underline. The 1mm/6mm brush allows you to write with thin and thick lines, providing excellent versatility and flexibility, allowing you to easily create various styles, sketches and patterns Infinite uses: When using these double-tip super marker pens, your imagination becomes vivid, because they are very suitable for drawing, writing, sketching, painting, painting, doodling, filling adult coloring books or anything else that allows you to show your creativity Side of Full-color specifications: These pens cover a broad spectrum and can be mixed together to make your own unique colors, multi-purpose and different labels to help you store, organize, track, and share gifts or daily commodities. Item Name: Art Mark Features: double head/alcohol/comic sketch marker Length: 6.1 inches / 15.5 cm