This is a wooden shaft mechanical pencil, MSD1 model, from Kobuta Kobo. The lead diameter is 0.5mm, and the wood type is Lace Sheoak. I purchased it online, but I've decided to send it to someone who will use it. I bought a similar pen around the same time, so I haven't used this one much. Lace Sheoak is a rare wood from Australia with restricted logging, characterized by its vein-like grain. The clip on this pen can be removed, so those who want a more comfortable writing experience can try it. It's a slim pen with a good view of the pen tip, and I think it's a pen that can be used in various situations. I will also include the maintenance oil that comes with the purchase of Kobuta Kobo pens. The maintenance oil is unused and unopened. I am very sorry, but I am not considering lowering the price. Thank you for your understanding. [Search Keywords] Stationery, Wooden Shaft Mechanical Pencil, Mechanical Pencil, Kobuta Kobo Type: Drafting Mechanical Pencil Body Material: Wooden Shaft