A handy size for gradation. The bristle length is 0.5mm longer than the WQ 10TS model and are dyed with black tea.

Details
Bristle material: Sokoho goat (tea-dyed)
Bristle shape: Round and flat
Brush length: 125mm
Bristle length: 15mm
Ferrule width: 9.8mm
Ferrule height: 3.8mm