This is a high-quality calligraphy brush made of sheep's wool. Size: See photos. Bristle length: Approximately 6.2cm Bristle diameter: Approximately 8.5mm This is not a new item; please review the following details. There is no maker's mark, but I recall buying it a long time ago from someone who made brushes. The price sticker is from that time. The original price was 42,000 yen. I initially applied light ink to it, and then used it about 4 or 5 times. After that, I stored it carefully, so there is no shedding of the bristles. Considering the size and price, this is a very good brush with soft, fine bristles. In my opinion, and of course, it depends on the individual, I think it might be a little large for practicing on half-sheet paper. Please feel free to comment if you have any questions.