Mono graph pens

Mono graph are smart mechanical pencils from Tombow. The pens have leads with a 0.5 mm line width, which becomes extra stable with a 4 mm metal tip, breaks less often with rulers. What is particularly distinctive about these pens is that they have a shaking mechanism. You shake the pen to advance leads. In addition, they have an extra long eraser that you twist forward.

Good pencil for school, the office and in Bullet Journaling.