BHA Liner Brush made by Xu Laosan

BRUSH TIP: 1-7/16" (3.5CM), 1/4"(0.7CM) DIAMETER ; HANDLE:  9-1/8" (23CM)

This specialty BHA liner brush is a combination of stiff and soft hairs made by Master Xu Laosan in Nanjing, my hometown.  

The sheep soft hair on the outer layer serves as a reservoir and the rat whisker stiff hair core with Long and pointed tip make it a superb outliner brush in the gongbi fine-line style painting. Also good for free-style drawing and sketching.