This product is a Kurogaki (black persimmon) mechanical pencil made using Kato Metal 202, supervised by Kobou Setsuri. It can also be changed to a ballpoint pen. Gold hardware: +800 yen Silver hardware: -200 yen Kurogaki is said to appear in only 1 out of 10,000 trees, making it extremely valuable and expensive. Furthermore, this is a rare Peacock Wood, featuring a pattern resembling peacock feathers. Please refrain from purchasing if you are seeking perfection, as this is a handmade item. The thickest part is approximately 14.5mm. Kurogaki scraps will also be included. Please refrain from price negotiations.