Pilot Fountain Pen Cartridge Iroshizuku Bamboo Charcoal 6 IRF6STAK 0.9cc

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[Type] General calligraphy ink [Capacity] 0.9cc x 6 bottles [iroshizuku series] Colorful ink created from the beautiful scenery [How to use cartridge ink] Remove the stem of the fountain pen, point the pen tip upward, and insert the cartridge. (Insert the cartridge straight without turning it.) [How to use cartridge ink] After installing the cartridge, if the ink does not come out even after leaving it for a while, press the cartridge lightly from both sides to send the ink to the pen tip and you will be able to write smoothly.