This is a 0.2mm ultra-fine mechanical pencil. It's incredibly thin, but the automatic lead advance function is really great. However, there's a problem: the part in the fourth photo is probably broken, and it collapses when writing, making it unusable. If you buy just that part separately or elsewhere, you should be able to get it cheaper than the retail price. The condition is quite good, as it stopped working early on and hasn't been used much since. When you purchase it, I will also send you the extra lead.