This is a pencil by Kobo-Setsuri, the "Kusabi" model, a mechanical pencil made from rosewood burl. The lead diameter is 0.3mm. You can purchase mechanisms with different lead diameters at the Kobo-Setsuri official store. Rosewood is a wood that rarely produces burl grain, and it's said that this particular grain may never appear again. The fiery grain is powerful and a truly beautiful masterpiece. It was the highest-priced pencil at Kobo-Setsuri's solo exhibition. It's such a rare pencil that I've been hesitant to use it, but I'm offering it for sale in the hopes that someone will appreciate it. Shipping methods can be changed, so please let me know when you purchase. It's lighter than the Nohara Kogei mechanical pencil due to the aluminum pipe, making it easy to handle. I'm sorry, but I'm not considering lowering the price. Thank you for your understanding. Type: Mechanical pencil body Body material: Wooden shaft