Profit Jr. Transparent Fountain Pen

It looks like glasswork, and we recommend filling it with colored ink.
For those buying their first fountain pen, those who want to play around with ink, and those who want to enjoy using fountain pens...
This is a recommended product that can be used for a variety of purposes.
*Because the pen core is transparent, the ink color will remain faintly even after cleaning, but this will not affect the pen's use.