10PCS Fountain Pen Ink Cartridge Set

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This 10-piece fountain pen ink cartridge set is designed for convenient writing, school use, office work, and everyday stationery needs.
Each cartridge features a 3.4mm caliber design for compatible fountain pen refill systems.
The set includes blue, red, and black ink options for versatile writing and marking purposes.
The plastic cartridge structure provides clean, easy, and mess-free ink replacement.
These ink refills deliver smooth writing performance with consistent ink flow for daily use.
The cartridges are suitable for fountain pens used in classrooms, offices, journaling, and creative writing tasks.
Users can enjoy quick installation and reliable ink delivery without the need for bottled ink refilling.
The compact cartridge design makes them easy to carry, store, and replace as needed.
This ink cartridge set is suitable for students, teachers, office workers, and stationery enthusiasts alike.
This fountain pen refill set is a practical addition to any stationery and writing supplies collection.