Specifications: This brush pen has a grip that is gentle on the hands and is made to look like a "Daruma Shaft brush". It is easy to hold and allows you to write beautifully even more brushstrokes. Product Size: 0.5 x 0.7 inches (12 x 179 mm) (including Lilian); Hard brush; Water-based pigment ink; Writing line: Approx. 0.02 - 0.06 inches (0.5 - 1.5 mm); Fine line; Model number: XT1-10S XT2-10S XT3-10S XT4-10S