---
product_id: 542669531
title: "S Te Dupont 40850 Ballpoint Pen, Oil-Based, Refill, Medium, Blue"
brand: "stratton essential supply"
price: "222 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Stratton Essential Supply"
url: https://www.desertcart.dk/products/542669531-s-te-dupont-40850-ballpoint-pen-oil-based-refill-medium
store_origin: DK
region: Denmark
---

# Vibrant blue oil-based ink for lasting impressions Refillable design for sustainable luxury Medium point for smooth, precise writing S Te Dupont 40850 Ballpoint Pen, Oil-Based, Refill, Medium, Blue

**Brand:** stratton essential supply
**Price:** 222 kr
**Availability:** ✅ In Stock

## Summary

> 🖋️ Elevate your writing game with precision and style—because your pen deserves the best.

## Quick Answers

- **What is this?** S Te Dupont 40850 Ballpoint Pen, Oil-Based, Refill, Medium, Blue by stratton essential supply
- **How much does it cost?** 222 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/542669531-s-te-dupont-40850-ballpoint-pen-oil-based-refill-medium)

## Best For

- stratton essential supply enthusiasts

## Why This Product

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

## Key Features

- • **Vivid Blue Ink:** Oil-based formula ensures rich, fade-resistant color that stands out in any document.
- • **Trusted Quality:** Backed by a 4.5-star rating and crafted by the prestigious S.T. Dupont brand.
- • **Effortless Precision:** Medium point delivers clean, consistent lines for professional notes and signatures.
- • **Perfect Compatibility:** Specifically engineered to fit S.T. Dupont Fidelio pens flawlessly—no guesswork needed.
- • **Sustainable Sophistication:** Refillable cartridge reduces waste while maintaining your pen’s iconic elegance.

## Overview

The S.T. Dupont 40850 Ballpoint Pen Refill features a medium point with vibrant blue oil-based ink, designed exclusively for S.T. Dupont Fidelio pens. This refill offers smooth, consistent writing with fade-resistant color, ensuring your professional documents always make a lasting impression. Its refillable design supports sustainability without compromising luxury, backed by a strong customer satisfaction rating.

## Description

S Te Dupont Ballpoint Pen Refill, Medium Box size and weight are dummy numbers.

Review: Perfect Fit & Works Great! - When the previous cartridge in my S.T. Dupont Fidelio ball-point pen went dry, I went searching for a replacement cartridge that would fit my pen. The old cartridge didn't have any identifying number on it; so I was flying in the blind at the beginning of my search. I just had to find a cartridge somewhere that looked like the old one. The D-40851 cartridge looked like the previous one but I still wasn't sure. I ordered it anyway since I had few other options. I was delighted when I received the cartridge and it fit perfectly in my pen. So, it was a perfect fit and that made me a very happy and satisfied customer! I can use my pen again!
Review: Ok - Ok

## Features

- S.T.Dupont Permanent Ballpoint Pen Refill, Medium, Blue

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004Y03DHE |
| Best Sellers Rank | #107,098 in Office Products ( See Top 100 in Office Products ) #853 in Ink Pen Refills |
| Brand | Stratton Essential Supply |
| Color | Bule |
| Customer Reviews | 4.5 4.5 out of 5 stars (31) |
| Date First Available | August 10, 2016 |
| Ink Color | Blue |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.774 ounces |
| Item model number | D-40850 |
| Manufacturer | エス・テー・デュポン(S.T.Dupont) |
| Manufacturer Part Number | D-40850 |
| Package Dimensions | 4.17 x 1.69 x 0.12 inches |
| Point Type | Medium |

## Product Details

- **Brand:** Stratton Essential Supply
- **Manufacturer:** エス・テー・デュポン(S.T.Dupont)
- **Number of Pieces:** 1
- **Package Size Name:** Single
- **Style:** 40850

## Images

![S Te Dupont 40850 Ballpoint Pen, Oil-Based, Refill, Medium, Blue - Image 1](https://m.media-amazon.com/images/I/51l88jp4cTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Fit & Works Great!
*by A***R on February 23, 2021*

When the previous cartridge in my S.T. Dupont Fidelio ball-point pen went dry, I went searching for a replacement cartridge that would fit my pen. The old cartridge didn't have any identifying number on it; so I was flying in the blind at the beginning of my search. I just had to find a cartridge somewhere that looked like the old one. The D-40851 cartridge looked like the previous one but I still wasn't sure. I ordered it anyway since I had few other options. I was delighted when I received the cartridge and it fit perfectly in my pen. So, it was a perfect fit and that made me a very happy and satisfied customer! I can use my pen again!

### ⭐⭐⭐⭐ Ok
*by C***N on June 1, 2019*

Ok

### ⭐⭐⭐⭐⭐ The real deal
*by A***N on February 18, 2020*

This was an authentic ST Dupont refill, just as I like - the point and the color

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**Shop now:** [https://www.desertcart.dk/products/542669531-s-te-dupont-40850-ballpoint-pen-oil-based-refill-medium](https://www.desertcart.dk/products/542669531-s-te-dupont-40850-ballpoint-pen-oil-based-refill-medium)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-02*