---
product_id: 175622078
title: "Twsbi Diamond 50 Ink Bottle (Polished Aluminum)"
brand: "twsbi"
price: "¥11743"
currency: JPY
in_stock: true
category: "Twsbi"
url: https://www.desertcart.jp/products/175622078-twsbi-diamond-50-ink-bottle-polished-aluminum
store_origin: JP
region: Japan
---

# 50ml precision volume 2-way filling system Perfect fit for TWSBI pens Twsbi Diamond 50 Ink Bottle (Polished Aluminum)

**Brand:** twsbi
**Price:** ¥11743
**Availability:** ✅ In Stock

## Summary

> 🖋️ Elevate your writing ritual with precision and style!

## Quick Answers

- **What is this?** Twsbi Diamond 50 Ink Bottle (Polished Aluminum) by twsbi
- **How much does it cost?** ¥11743 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/175622078-twsbi-diamond-50-ink-bottle-polished-aluminum)

## Best For

- twsbi enthusiasts

## Why This Product

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

## Key Features

- • **Precision Ink Volume:** 50ml capacity ensures long-lasting creativity without constant refills
- • **Tailored Compatibility:** Specifically engineered for TWSBI Diamond, 530, 540, 580, and Mini fountain pens
- • **Dual Filling Innovation:** Versatile 2-way filling system adapts seamlessly to your preferred pen style
- • **Trusted Quality & Ratings:** Highly rated with 4.6 stars from discerning fountain pen enthusiasts
- • **Sleek Polished Aluminum Cap:** Modern, durable design elevates your desk aesthetic and ink experience

## Overview

The TWSBI Diamond 50 Ink Bottle offers a 50ml capacity with a unique 2-way filling system designed for perfect compatibility with TWSBI Diamond series fountain pens. Featuring a polished aluminum cap, it combines durability with sleek aesthetics, making it a top choice for professionals seeking reliable, stylish ink refills.

## Description

TWSBI Diamond 50 Ink bottle: designed for every type of fountain pen and specific upper cap design for Diamond , 530, 540, 580, Mini fountain pen.

## Features

- Diamond 50 Ink Bottle
- 2 way filling ink bottle
- Fill TWSBI pens with perfect fitment or dip in with any pen

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07WHJVWSF |
| Best Sellers Rank | #203,942 in Office Products ( See Top 100 in Office Products ) #342 in Bottled Pen Ink |
| Brand Name | TWSBI |
| Container Type | Bottle |
| Customer Reviews | 4.6 4.6 out of 5 stars (68) |
| Manufacturer | TWSBI |
| Manufacturer Part Number | M7447690 |
| Number of Items | 1 |
| Paint Type | Watercolor |
| Unit Count | 1 Count |
| Volume | 50 ml |

## Product Details

- **Brand:** TWSBI
- **Item Volume:** 50 ml
- **Manufacturer:** TWSBI
- **Package Information:** Bottle
- **Paint Type:** Watercolor

## Images

![Twsbi Diamond 50 Ink Bottle (Polished Aluminum) - Image 1](https://m.media-amazon.com/images/I/61C78JXwMZL.jpg)

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**Shop now:** [https://www.desertcart.jp/products/175622078-twsbi-diamond-50-ink-bottle-polished-aluminum](https://www.desertcart.jp/products/175622078-twsbi-diamond-50-ink-bottle-polished-aluminum)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-15*