A good brush is characterized by four virtues: "Sharpness," "Evenness," "Roundness," and "Strength."
"Sharpness": The brush tip is sharp, pointed, and well-formed.
"Evenness": The brush tip is neatly and evenly shaped.
"Roundness": The entire brush head is a well-formed cone shape without any splits.
"Strength": The brush is durable, strong, flexible, and resilient.
Namura Taiseido's calligraphy brushes are handcrafted one by one by artisans to possess these four virtues.
Caution after use: To prevent ink buildup at the base and rotting, and to prevent the bristles from breaking, rinse the brush head with water, gently rubbing it with your hands to remove any ink.
(From Amazon.co.jp)
Brush tip diameter: 8.5mm
Brush tip length: 46.0mm
Main material composition of the brush tip: Sheep wool, white horsehair
Shaft material and appearance: Bamboo
Hardness classification: Medium-soft