---
product_id: 54671113
title: "ONLINE double-sided pen ink cartridges, universal pen refills, compatible with all common fountain pens, even Lamy pens - Spare cartridges - 4-pack - Erasable, washable, colour royalblue"
brand: "online"
price: "€ 28.16"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/54671113-online-double-sided-pen-ink-cartridges-universal-pen-refills-compatible
store_origin: FI
region: Finland
---

# Erasable & washable royal blue ink Double-sided universal fit Compatible with all fountain pens ONLINE double-sided pen ink cartridges, universal pen refills, compatible with all common fountain pens, even Lamy pens - Spare cartridges - 4-pack - Erasable, washable, colour royalblue

**Brand:** online
**Price:** € 28.16
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write Boldly, Refill Smartly – Never Run Dry on Creativity!

## Quick Answers

- **What is this?** ONLINE double-sided pen ink cartridges, universal pen refills, compatible with all common fountain pens, even Lamy pens - Spare cartridges - 4-pack - Erasable, washable, colour royalblue by online
- **How much does it cost?** € 28.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/54671113-online-double-sided-pen-ink-cartridges-universal-pen-refills-compatible)

## Best For

- online enthusiasts

## Why This Product

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

## Key Features

- • **Premium Royal Blue Ink:** Consistent, vibrant color that won’t fade or smudge
- • **Trusted German Quality:** From Online Schreibgeräte GmbH, a leader since 1991 in premium writing tools
- • **Long-Lasting Ink Capacity:** Extra-large cartridges mean fewer refills and more writing flow
- • **Convenient 4-Pack Refill Kit:** Always have backups ready for home, office, or school
- • **Universal Double-Sided Design:** Fits Lamy & all standard fountain pens effortlessly

## Overview

These ONLINE double-sided ink cartridges offer a universal fit for all common fountain pens, including Lamy, with erasable and washable royal blue ink. The extra-large cartridges provide long-lasting use, packaged in a convenient 4-pack refill kit. Trusted German engineering ensures premium quality and consistent vibrant color for professional and everyday writing needs.

## Description

double-sided pen ink cartridges, universal pen refills, compatible with all common fountain pens, even Lamy pens - Spare cartridges - 4-pack - Erasable, washable, colour royalblue

## Features

- FOR EVERY FOUNTAIN PEN: Are you bored of writing with the same fountain pen every day? These double-sided ink cartridges are compatible with all common fountain pens, even Lamy pens.
- PEN REFILLS KIT: Universal ink cartridges in a 4-pack as a refill kit. Refill cartridges for home and school. Usable on both sides. One side fits on Lamy ink pens, the other side fits all other standard pens.
- LONGLASTING: Extra large. More value for money! Ideal size for people who write very often, no need to change the cartridge so often anymore.
- PREMIUM INK: Our ONLINE royal blue high quality ink has an even blue shade that doesn’t change. Available in different colours and kits.
- ONLINE BRAND QUALITY: Online is a German company founded in 1991 and specialises in pens, calligraphy kits, pen cases and much more. Online offers high quality only!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Online Schreibgeräte GmbH |
| Brand | Online |
| Model Number | 17026 |
| Product Dimensions | 19 x 8.5 x 1 cm; 2 g |
| Colour | Blue |
| Cover Material | Royal blue. Test winner |
| Material Type | 20 cartridges |
| Number of Items | 4 |
| Size | pack of 4 (54 cartridges) |
| Point Type | Medium |
| Ink Colour | Royal blue. Test winner |
| Manufacturer Part Number | 17026 |
| Item Weight | 2 g |

## Product Details

- **Brand:** Online
- **Style:** 20 cartridges
- **Item dimensions L x W x H:** 19 x 8.5 x 1 centimetres
- **Number of pieces:** 4
- **Manufacturer:** Online Schreibgeräte GmbH

## Images

![ONLINE double-sided pen ink cartridges, universal pen refills, compatible with all common fountain pens, even Lamy pens - Spare cartridges - 4-pack - Erasable, washable, colour royalblue - Image 1](https://m.media-amazon.com/images/I/81sfWHDXlXL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Absolutely fantastic.
*by J***E on 11 June 2025*

When you have multiple fountain pens, cartridges become hard to get for some. This brand of cartridge is 100% brilliant. Can recommend over and over !

### ⭐⭐⭐⭐⭐ Works Great
*by M***D on 12 January 2025*

Fitted perfectly and worked a treat

### ⭐⭐⭐⭐ Will fit parker pens
*by C***R on 24 February 2025*

States that these inserts do not fit parker fountain pens but they do, however they do require a little bit of persuasion to do so.Just be carful as it can cause the Lamy adapted end to open and leak ink.

## Frequently Bought Together

- ONLINE double-sided pen ink cartridges, universal pen refills, compatible with all common fountain pens, even Lamy pens - Spare cartridges - 4-pack - Erasable, washable, colour royalblue
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- BIC Ink Killer, Pack of 4, Ink Eraser, Smudge-Resistant, Ideal for The Office, Home Office or School

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**Shop now:** [https://www.desertcart.fi/products/54671113-online-double-sided-pen-ink-cartridges-universal-pen-refills-compatible](https://www.desertcart.fi/products/54671113-online-double-sided-pen-ink-cartridges-universal-pen-refills-compatible)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-17*