What is Mitsubishi black technology pen?

Mitsubishi black technology pen is mechanical pencil. According to the inquiry information, Mitsubishi Black Technology Pen is mechanical pencil. Compared with single-speed rotation, the double-speed rotation function makes the refill rotate faster and more efficiently. When the writing pen falls, the refill will automatically rotate at a certain angle. You can see the yellow LOGO logo rotating through the window design. With the increase of rotating speed, the wear degree of lead core is more uniform, so that when writing, writing and tracing lines are uniform from beginning to end, and the depth and thickness of lines are always consistent.