The font length of writing brush is 15mm and the height is 12mm.

does the subject want to ask, "What is the font size of writing brush with a length of 15mm and a height of 12mm?"? Small three. The writing brush running script font, also known as "Chinese character running script font", is a running script font that emphasizes the writing style of regular script, is freer than regular script, and is more regular than cursive script. The length of this font is 15mm, and the height is 12mm, which refers to the small three font. The running script font is the common script of Qin State.