It is thick, a convenient oiliness marker to be able to use extra-fine for two uses for in one of them.
It keeps an ink-colored lineup.
With quick-drying, water resistance, it is wide in paper, cloth, a tree, corrugated cardboard glass plastic, metal, a vinyl kind and is available.(not suitable for the soft vinyl chloride products such as floats.)
The thickness of the pen point is 0.5mm - 1.3mm.
Extra-fine character: 0.5mm
Axle diameter: 11.9mm
Full length: 141.8mm