Kobo-Setsugi Wooden Shaft Mechanical Pencil, Pencil Wedge, Keyaki (Japanese Zelkova) wood grain. The lead diameter is 0.5mm, with a slide-knock mechanism. Fixed nibs are also sold at the Kobo-Setsugi online shop. I purchased this at a store, but I bought another pen at an exhibition, so I would like to send this to someone who will use it a lot. It's difficult to convey in the photos, but it has a very beautiful shrinkage grain that appears depending on the angle of the light. Keyaki (Zelkova) ages quickly, so the more you use it, the deeper the color becomes, and it grows in your hand. This pen hasn't been used much, so there's almost no aging. The shape is easy to grip, and it's a wonderful mechanical pencil that can be used at the forefront. I will also include the wood species card that came with it when I purchased it. I am very sorry, but I am not considering lowering the price. Thank you. [Search Keywords] Stationery Wooden Shaft Mechanical Pencil Mechanical Pencil Kobo-Setsugi Type...Mechanical Pencil Body Body Material...Wooden Shaft