Shuttle Art dual tip brush pen set has 105 vibrant colors, which will arouse your interests in calligraphy, underlining, drawing, doodling and hand lettering. Another coloring book will be provided for relaxation. 1-4mm flexible fiber brush tip and 1mm fine tip in one marker, allows you to create medium or bold strokes by changing brush pressure and experience fine strokes with fine tip. Our tips are made of special fiber material which is wear-resistant, no branching and durable for a really long time. And 105 matched colored cap design makes it easy for you to recognize each color. Brush pens are packed in a portable storage case with individual inserts, which keeps pens well placed in it and protects them from damage. It also helps you organize and choose them more efficiently. Convenient to store in backpack or take outside.