Shiratsuyu No. 4 Brush for Work Creation Fine Point Wool Brush: Tip Size: 0.4 inch (10.5 mm) Diameter x 2.4 inch (60 mm) Product Size: Shaft Diameter 0.5 inch (13.5 mm) x 11.8 inch (300 mm) Hair Material: Fine Sheep Wool (fine light grain wool), For art production, Exhibition works, for radiation work, with a good tip opening, expresses a 3D line quality. Best Selected Poles Made of wool on top. It contains good ink so you can create works while enjoying the changes in hydration. The tip is made with a sharp tip that is easy to put together so you can show delicate handprints. When you finish using the brush, it is important to remove the ink liquid remaining on the tip of the head. If the ink remains on the tip of the tip will harden the brush, it may cause the brush to break.