Set 6 Koi Brush Pen Urban Sakura Markers Fun case with 6 shades of gray from Koi's rich color palette. By holding the tips of two brush pens together you can easily blend colors together. Ink flows from one end to the other. You can use the Koi Brush Pens for bullet journaling, illustrations, sketching, vignettes, comics, coloring pictures, and many other creative applications. They have a flexible and resistant brush tip, with which you can draw lines of various thicknesses by adjusting the pressure exerted on the tip. Durable tip that resumes its shape after each stroke. The ink is water-based, which allows you to achieve wonderful color gradations by drawing different layers on top of each other or by holding the tips together. The ink can also be mixed with water. Measure: 14 cm Colours: 44 Cold Grey, 46 Dark Cold Grey, 153 Light Cold Grey, 45 Warm Grey, 144 Dark Warm Gray and 145 Light Warm Grey Brand: Sakura