Namurataiseidou Calligraphy Brush, Wooden Handle, Tenran (White Hair), Size 5

A good brush has four virtues: "Sharp," "Sai," "En," and "Ken." "Sharp": The tip is sharp and well-defined. "Sai": The tip is neatly trimmed and well-aligned. "En": The entire tip is a regular, conical shape with no cracks. "Ken": Durable, strong, flexible, and resilient. Namura Taiseido calligraphy brushes are crafted individually by artisans to possess these four virtues. After use: To prevent ink buildup at the base, which can lead to rot or breakage, rinse the ink off the tip with water, rubbing it with your hands.

(From Amazon.co.jp) Brush Diameter: 15.0mm Brush Length: 60.0mm Brush Tip Material: Wool, Tenbi Hair Shaft Appearance: Wooden shaft, Daruma Hardness: Medium Hard