---
product_id: 48686327
title: "8 x Schmidt 635M Mini Ball Pen Refill - Black - (Lamy M21 and Cross 8518-4 Compatible)"
brand: "lamy"
price: "¥4229"
currency: JPY
in_stock: true
reviews_count: 13
category: "Lamy"
url: https://www.desertcart.jp/products/48686327-8-x-schmidt-635m-mini-ball-pen-refill-black-lamy
store_origin: JP
region: Japan
---

# Compact 2.75" refill fits multiple premium pens Rich black ink for professional clarity Medium nib for smooth writing 8 x Schmidt 635M Mini Ball Pen Refill - Black - (Lamy M21 and Cross 8518-4 Compatible)

**Brand:** lamy
**Price:** ¥4229
**Availability:** ✅ In Stock

## Summary

> 🖊️ Elevate your pen game—because your signature deserves the best.

## Quick Answers

- **What is this?** 8 x Schmidt 635M Mini Ball Pen Refill - Black - (Lamy M21 and Cross 8518-4 Compatible) by lamy
- **How much does it cost?** ¥4229 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/48686327-8-x-schmidt-635m-mini-ball-pen-refill-black-lamy)

## Best For

- lamy enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Value Pack:** 8-pack refills keep you stocked and ready—never run out during critical moments.
- • **Premium Ink Quality:** Deep black ink ensures bold, professional writing that stands out in meetings and presentations.
- • **Effortless Precision:** Medium nib delivers consistent, smooth lines for flawless note-taking and signing.
- • **Trusted Craftsmanship:** Made in the UK by Schmidt, a leader in pen refill technology with a 4.6-star rating from 772 users.
- • **Universal Compatibility:** Seamlessly fits Lamy M21, Cross 8518-4, and select Swarovski pens—upgrade your favorite pen instantly.

## Overview

The Schmidt 635M Mini Ball Pen Refill is a medium-point black ink refill compatible with Lamy M21, Cross 8518-4, and some Swarovski pens. Measuring 2.75 inches with cap, it offers smooth, consistent writing in a convenient 8-pack. Manufactured in the UK, it combines premium ink quality with trusted durability, making it a top choice for professionals seeking reliable pen performance.

## Description

Schmidt prints the distributors name "PRIVATE RESERVE" on the outside barrel of some of the refills we ship. Compatible with LAMY M21, Cross 8518-4, and some Swarowski Pens (please check to see if your pen will use this refill).

Review: Swarovski pen refills - Fits perfectly. Good value for money.
Review: Perfect refill for Swarovski pen - First my Swarovski pen perfectly and writes nicely.

## Features

- Schmidt 635M MINE MEDIUM Ballpoint Ink Refill w/ Plastic Cap 8-Pack
- Ink Color: BLACK (also available in BLUE ~ RED & GREEN)
- The refill measures 2-11/16" in length (not including the plastic CAP)
- Measurement with CAP: 2-3/4" (depending on how far u insert in cap)
- Writing Nib: MEDIUM

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008B2EQEU |
| Best Sellers Rank | 14,812 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 137 in Pen Refills |
| Brand Name | Lamy |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.6 4.6 out of 5 stars (772) |
| Ink Colour | Black |
| Item Dimensions | 10.2 x 5.1 x 0.3 centimetres |
| Item Weight | 9 g |
| Manufacturer | Schmidt |
| Manufacturer Part Number | LMY_8518-4 |
| Model Number | LYSB008B2EQEU-ELECTRNCS |
| Number of Pieces | 8 |
| Package Size Name | 8-Pack |
| Point Type | Medium |
| Product Warranty | yes |
| Style | Ballpoint |
| UPC | 080333635124 |
| Unit Count | 8 count |

## Product Details

- **Brand:** Lamy
- **Item dimensions L x W x H:** 10.2 x 5.1 x 0.3 centimetres
- **Item weight:** 9 g
- **Number of pieces:** 8
- **Style:** Ballpoint

## Images

![8 x Schmidt 635M Mini Ball Pen Refill - Black - (Lamy M21 and Cross 8518-4 Compatible) - Image 1](https://m.media-amazon.com/images/I/81CU8N6D1LL.jpg)

## Questions & Answers

**Q: Does it fit Swarovski Stardust pens?**
A: I don't know about the Stardust pens but I know it fits the Swarovski Lady Crystalline pens.

**Q: If you have tried this refill with a livescribe pen, does it fit/mod? (livescribe refills are about 2.25 inches long x ~2.5mm wide)**
A: Tested: fits nicely and the Livescribe 3 pen also recognizes the ink when writing.

**Q: Is there a fine point version?**
A: The refills I received, both blue and black, were medium point.

**Q: Is this refill as pictured with just the silver tip only or is the product received the silver and black tip refill?**
A: Normally the tip color will correspond to the ink color.  In this case the tips should be black.  Jim

## Customer Reviews

### ⭐⭐⭐⭐⭐ Swarovski pen refills
*by G***E on 9 March 2026*

Fits perfectly. Good value for money.

### ⭐⭐⭐⭐⭐ Perfect refill for Swarovski pen
*by H***N on 17 August 2025*

First my Swarovski pen perfectly and writes nicely.

### ⭐⭐⭐⭐ Value for money
*by I***. on 4 April 2016*

Was not supplied with the plastic refill cap as depicted in advert and under description of item which was supposed to be a BONUS, Not a big problem as I had a couple of spares. Excellent value for money compared to other suppliers. Would use again. Would have given 5 stars had the Refill Cap been included.

## Frequently Bought Together

- 8 X Schmidt 635M Mini Ball Pen D1 size Refills – BLACK Ink and one removable black end cap
- Schmidt 635 Mini D1 Ballpoint Refill Medium, 4 Pack, Blue (SC58150)
- Zebra 0.5mm Royal Blue Gel Ink Refill (RJSB5- RBL), for Zebra Multi Function Pen Shabo X Ballpoint Pen, × 5 Pack/total 5 pcs (Japan Import) [Komainu-Dou Original Package]

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**Shop now:** [https://www.desertcart.jp/products/48686327-8-x-schmidt-635m-mini-ball-pen-refill-black-lamy](https://www.desertcart.jp/products/48686327-8-x-schmidt-635m-mini-ball-pen-refill-black-lamy)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-13*