Kuretake ZIG LP LETTER PEN COCOIRO Refill LP-R Ultra Thin Hard Pen

The ultra-fine hard pen type refill is the refill of the Kuretake LETTER PEN basic pen series.
It can write very fine and small ink pen characters with slight thickness, and the tip of the pen tip is soft.
Writing thickness: 0.1mm
Can be used with COCOIRO body