Size approximately... Brush... Tip length 35mm x diameter 7mm x bamboo length 201mm Combined brush of weasel hair and sheep wool (e.g., "Seven Weasel, Three Sheep" or "Five Weasel, Five Sheep"): This is a brush that mixes multiple types of hair, sometimes bearing the product name "Ryusui" (Flowing Water), or being named for the ratio of materials used. By combining the characteristics of weasel hair (stiff) and sheep wool (soft and sticky), it takes advantage of both. Specifically, the stiffness of the weasel hair ensures the brush's operability, while the softness of the sheep wool allows for ink retention and variations in line width (nuance), creating a balanced feel. Suitable for harmonious compositions and mixed kana-kanji writing.