[9 different sizes] Available in 9 sizes from 0.15 mm to 0.7 mm. (Thickness: 003 - 0.15 mm / 005 - 0.2 mm / 01 - 0.25 mm / 02 - 0.3 mm / 03 - 0.35 mm / 05 - 0.45 mm / 06 - 0.5 mm / 08 - 0.7 mm / brushed type) It is useful for lines, delicate drawings, and any artwork. [1.5 times larger capacity ink] By adopting a direct liquid design, the amount of ink and durability are improved by 1.5 times compared to the normal cotton core type. High-quality chips made in Japan are used to achieve a smooth drawing feel. It is a "direct liquid type" in which the ink is placed directly into the body, so you can draw smoothly until the end. It uses non-toxic inks that are ASTM D-4236 certified, so anyone can use it with confidence. In addition, the ink dries quickly, so you don't have to worry about blurring or bleeding. [Transparent pen shaft and & size printing] Since the pen shaft is transparent, you can check the remaining ink level at a glance. The size is printed on the cap and body, making it easy to identify and find. A metal clip is also designed for easy carrying. [Water-resistant and alcohol-resistant ink] It uses black ink, which is water and alcohol resistant. You can also use alcohol markers, watercolor pens, colored pencils, watercolors, etc., to expand your creativity.