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With a 3.4mm bore diameter, the Hongdian Fountain Pen Cartridge Ink 3.4mm fits specific Hongdian and Yongsheng models. Non-toxic dye ink dries fast to prevent smudging on paper surfaces. Each pack contains 30 pieces for extended refill cycles during heavy writing tasks.
Key Features
- 3.4mm Bore Diameter: Fits specific 3.4mm internal feed systems in Hongdian pens. Stops leaks from loose connections.
- Quick-Drying Formula: Evaporates rapidly on cellulose-based paper fibers during writing. Reduces smearing under heavy humidity.
- 30-Piece Pack: Provides thirty individual cartridges in a single bulk package. Lowers the frequency of reordering supplies.
- Neutral pH Ink: Maintains a chemically balanced dye-based composition for nib safety. Prevents corrosion on steel nib units.
Frequently Asked Questions
Are Hongdian cartridges standard international size?
No, these use a 3.4mm bore diameter rather than the 2.6mm international standard. They only fit pens designed for wider proprietary inlets.
Which pens use 3.4mm ink cartridges?
Most Hongdian and Yongsheng fountain pens require this specific 3.4mm bore. Check your pen's feed diameter before attempting installation.
