Kokuyo Enpitsu Mechanical Pencil, Sharp Pencil, 1.3mm, Black, Japan Import (PS-P101D-1P) Black 1 Count (Pack of 1)

Specifications:

The core of this sharpe pencil is thick and hard to break, so it feels like writing with a wooden pencil, which means it combines the rough writing comfort of a wooden pencil and the convenience of a mechanical pencil.
The round triangular body is comfortable to hold and easy to grip and keeps you writing steady, and it won't fall off from the desk.
Soft elastomer resin is used for the main body, so it fits gently on your fingers and fits the moment you hold it in your hand. And No clip to get in the way.
The knock cap cannot be removed, it is designed to prevent it from being accidentally swallowed or lost. So just put refill lead directly into the knock part, and save you the trouble of removing any parts.
The sleeve of the nib completely retracts when not in use, so you can safely store it without causing any scratches or messing up the pen case.
Please be careful not to insert too much lead refills. (Up to 4 pieces) Lead may come out from the knock part if you load more than one. If you are concerned about it, you will be able to fill the hole with a seal or the like.