---
product_id: 190022021
title: "Hongdian Fountain Pen Set Ink Cartridges Blue Color, Pack of 30 Ink Refill Cartridges, 3.4 mm Bore Diameter"
brand: "erofa"
price: "€ 24.17"
currency: EUR
in_stock: true
reviews_count: 13
category: "Erofa"
url: https://www.desertcart.hr/products/190022021-hongdian-fountain-pen-set-ink-cartridges-blue-color-pack-30
store_origin: HR
region: Croatia
---

# 3.4 mm bore diameter quick-dry ink formula 30-pack ink cartridges Hongdian Fountain Pen Set Ink Cartridges Blue Color, Pack of 30 Ink Refill Cartridges, 3.4 mm Bore Diameter

**Brand:** erofa
**Price:** € 24.17
**Availability:** ✅ In Stock

## Summary

> 🖋️ Elevate your writing game—never run dry on style or substance!

## Quick Answers

- **What is this?** Hongdian Fountain Pen Set Ink Cartridges Blue Color, Pack of 30 Ink Refill Cartridges, 3.4 mm Bore Diameter by erofa
- **How much does it cost?** € 24.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/190022021-hongdian-fountain-pen-set-ink-cartridges-blue-color-pack-30)

## Best For

- erofa enthusiasts

## Why This Product

- Trusted erofa brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Ink Powerhouse:** 30 vibrant blue cartridges to keep your creativity flowing without pause.
- • **Effortless Elegance:** Smooth, uninterrupted ink flow that transforms every stroke into a statement.
- • **Smudge-Free Mastery:** Ink dries in seconds, ensuring your notes and signatures stay crisp and professional.
- • **Precision Fit Guaranteed:** 3.4 mm bore diameter engineered for seamless compatibility with Hongdian and similar fountain pens.
- • **Eco-Conscious Craftsmanship:** Neutral pH, non-toxic natural dyes for a safe, sustainable writing experience.

## Overview

The Hongdian Fountain Pen Set Ink Cartridges offer a generous 30-pack of blue ink refills with a precise 3.4 mm bore diameter, compatible with Hongdian and similar fountain pens. Crafted with neutral pH, non-toxic natural dyes, these cartridges deliver quick-drying, smudge-resistant ink for a smooth, reliable writing experience. Perfect for professionals who demand both quality and consistency in every pen stroke.

## Description

How to fill a fountain pen with cartridges: Insert the narrow end of the new cartridge into the black of section block with enough pressure to create a snug fit. The pin inside the section block will puncture the seal of the cartridges, allowing ink to flow into the section block. Screw the barrel on over the cartridge into the section block. Notice: It can take a while for the ink to fully saturate the pen, so don’t worry if it doesn’t start writing right away. You can swing the pen to make a few drops of ink coming out of the nib, so that it can flow easily. When you fill the pen at the first time, you can swing the pen to make a few drops of ink coming out of the nib, so that it can flow easily.

Review: Works perfectly with pen from same brand - I recently bought a (very good) pen from this brand so also ordered these ink cartridges. They are well priced and come in three separate boxes which is ideal. They are easy to insert, just give the pen a gentle shake over scrap paper to get the ink flowing. Perfect fit! The ink quality is good, and a true deep black. In my pen it flows smoothly, and writes really well. I'm pleased! Thanks for reading, I hope you find this review useful.
Review: Great service - Prompt service and good quality cartridges

## Features

- [ LARGER PACK ]: 30 pack of 3.4 mm bore diameter Blue ink cartridges ( compatible with fountain pens take 3.4mm cartridges such as hongdian)
- [ DIMENSION ]: Length Appr 51mm; Cartridge Diameter Appr4-7mm; bore diameter 3.4mm
- [ NEUTRAL PH & NON-TOXIC ]: The ink has been carefully manufactured using only natural dyes giving the composition a neutral, natural, and non-toxic PH.
- [ QUICK TO DRY ]: HongDian Designs ink takes only a few seconds to dry ensuring your important writing moments are not ruined by smudges or smears.
- [ EASY TO WRITE ]: With no break in ink flow, enjoy a smooth and optimal writing experience as your fountain pen glides elegantly across paper.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083RF352N |
| Best Sellers Rank | 11,416 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 81 in Pen Refills |
| Brand | erofa |
| Brand Name | erofa |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 1,683 Reviews |
| Ink Colour | Blue,Black |
| Item Weight | 0.1 Kilograms |
| Item weight | 0.1 Kilograms |
| Manufacturer | Hongdian |
| Manufacturer Part Number | HDBIC30SER |
| Model Number | HDBAU30INKED |
| Number of Pieces | 30 |
| Number of pieces | 30 |
| Package Size Name | 30 Pack |
| Point Type | Bold |
| Point type | Bold |
| Product Warranty | 3 Months |
| Style | Fountain |

## Product Details

- **Brand:** erofa
- **Item weight:** 0.1 Kilograms
- **Number of pieces:** 30
- **Point type:** Bold
- **Style:** Fountain

## Images

![Hongdian Fountain Pen Set Ink Cartridges Blue Color, Pack of 30 Ink Refill Cartridges, 3.4 mm Bore Diameter - Image 1](https://m.media-amazon.com/images/I/51VkFzejl0L.jpg)
![Hongdian Fountain Pen Set Ink Cartridges Blue Color, Pack of 30 Ink Refill Cartridges, 3.4 mm Bore Diameter - Image 2](https://m.media-amazon.com/images/I/51yAhyggk4L.jpg)
![Hongdian Fountain Pen Set Ink Cartridges Blue Color, Pack of 30 Ink Refill Cartridges, 3.4 mm Bore Diameter - Image 3](https://m.media-amazon.com/images/I/617JGwu6PDL.jpg)
![Hongdian Fountain Pen Set Ink Cartridges Blue Color, Pack of 30 Ink Refill Cartridges, 3.4 mm Bore Diameter - Image 4](https://m.media-amazon.com/images/I/51P6dYhgaaL.jpg)
![Hongdian Fountain Pen Set Ink Cartridges Blue Color, Pack of 30 Ink Refill Cartridges, 3.4 mm Bore Diameter - Image 5](https://m.media-amazon.com/images/I/51HDsoXVnkL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: can't seem to fit in the place it should go, it's too wide, what should i do?**
A: The bore diameter for these cartridges are 3.4 mm. Please confirm your pen take 3.4 mm cartridges.

**Q: Is this ink waterproof?**
A: No. Definitely not.

**Q: Are those erasable ?**
A: Like any other water-based ink, they aren't readily erasable

**Q: Are these suitable for a parker pen?**
A: No, they don't fit standard pens because the shaft before the ink is too long

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly with pen from same brand
*by S***T on 17 February 2025*

I recently bought a (very good) pen from this brand so also ordered these ink cartridges. They are well priced and come in three separate boxes which is ideal. They are easy to insert, just give the pen a gentle shake over scrap paper to get the ink flowing. Perfect fit! The ink quality is good, and a true deep black. In my pen it flows smoothly, and writes really well. I'm pleased! Thanks for reading, I hope you find this review useful.

### ⭐⭐⭐⭐⭐ Great service
*by R***K on 29 April 2026*

Prompt service and good quality cartridges

### ⭐⭐⭐⭐ Probably great, but doesn't fit my Parker pen
*by A***A on 8 February 2024*

Unfortunately, this doesn't fit my Parker fountain pen. Probably my fault, I presumed it would be compatible. They came well packaged and the product looks good. Just gotta work out what to do with 30 cartridges !

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**Shop now:** [https://www.desertcart.hr/products/190022021-hongdian-fountain-pen-set-ink-cartridges-blue-color-pack-30](https://www.desertcart.hr/products/190022021-hongdian-fountain-pen-set-ink-cartridges-blue-color-pack-30)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-18*