What brush should I use to write fine print?

Nine wolves and one sheep, in small letters (mahogany poles)

The front length is about 2.5 cm, and the circle diameter is about .5 cm

Writing composition, (wolf hair, sheep hair, hemp. )

in this pen, 79 points are selected from the northern wolf, 1 point from the sheep and a proper amount of hemp.

select fine glossy wool with good water absorption as the cover wool.

This pen is flexible, writable and paintable, and is suitable for writing characters of about 1 to 3 centimeters, depending on the size.