---
product_id: 27775464
title: "4B - Bungubox Blue Black, Original bottled ink for fountain pens, 50ml, Dark Blue, Navy, Indigo"
brand: "bungubox"
price: "¥25"
currency: JPY
in_stock: false
reviews_count: 1
url: https://www.desertcart.jp/products/27775464-4b-bungubox-blue-black-original-bottled-ink-for-fountain-pens
store_origin: JP
region: Japan
---

# 4B - Bungubox Blue Black, Original bottled ink for fountain pens, 50ml, Dark Blue, Navy, Indigo

**Brand:** bungubox
**Price:** ¥25
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** 4B - Bungubox Blue Black, Original bottled ink for fountain pens, 50ml, Dark Blue, Navy, Indigo by bungubox
- **How much does it cost?** ¥25 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/27775464-4b-bungubox-blue-black-original-bottled-ink-for-fountain-pens)

## Best For

- bungubox enthusiasts

## Why This Product

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

## Description

Bung Box Blue Black is also known as "4B" for short. This color was created with the intention to be between deep indigo, which a Japanese traditional color, and Agate, which is a French traditional color. This ink flows smoothly when it comes out from fountain pens and writes easily. The actual colors may be slightly different from the color on your monitor's display.

## Features

- Our original ink is hand-crafted by a toning master
- Made in Japan

## Images

![4B - Bungubox Blue Black, Original bottled ink for fountain pens, 50ml, Dark Blue, Navy, Indigo - Image 1](https://m.media-amazon.com/images/I/81v+MedrMPL.jpg)
![4B - Bungubox Blue Black, Original bottled ink for fountain pens, 50ml, Dark Blue, Navy, Indigo - Image 2](https://m.media-amazon.com/images/I/91kK8J8A0vL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Sheeeen!
  

*by U***4 on Reviewed in the United States on March 22, 2016*

This ink has a lovely blue to red sheen.  Goes down very smooth on Tomoe River paper.  Very similar to Akkerman's "Shocking Blue".  A well regarded ink, and rightly so.  Recommended.

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**Shop now:** [https://www.desertcart.jp/products/27775464-4b-bungubox-blue-black-original-bottled-ink-for-fountain-pens](https://www.desertcart.jp/products/27775464-4b-bungubox-blue-black-original-bottled-ink-for-fountain-pens)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-28*