---
product_id: 27509849
title: "Signo RT1 Gel Ballpoint Pen Blue Black Ink Refills, 0.38mm, Set of 4 (Japan import) [Komainu-Dou Original Package]"
brand: "uni-ball"
price: "€ 12.12"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/27509849-signo-rt1-gel-ballpoint-pen-blue-black-ink-refills-0
store_origin: IE
region: Ireland
---

# Signo RT1 Gel Ballpoint Pen Blue Black Ink Refills, 0.38mm, Set of 4 (Japan import) [Komainu-Dou Original Package]

**Brand:** uni-ball
**Price:** € 12.12
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Signo RT1 Gel Ballpoint Pen Blue Black Ink Refills, 0.38mm, Set of 4 (Japan import) [Komainu-Dou Original Package] by uni-ball
- **How much does it cost?** € 12.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/27509849-signo-rt1-gel-ballpoint-pen-blue-black-ink-refills-0)

## Best For

- uni-ball enthusiasts

## Why This Product

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

## Description

Uni-ball Signo RT1 Gel Ballpoint Pen Blue Black Ink Refills, 0.38mm, Set of 4

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Mitsubishi Pencil Co., Ltd. |
| Item Weight | 0.352 ounces |
| Product Dimensions | 6.05 x 0.31 x 2.73 inches |
| Item model number | UMR83.64/4p |
| Is Discontinued By Manufacturer | No |
| Number of Items | 1 |
| Size | 4 Count (Pack of 1) |
| Point Type | Extra Fine |
| Ink Color | Blue,Black |
| Manufacturer Part Number | 1 |

## Product Details

- **Style:** Gel,Ballpoint
- **Item dimensions L x W x H:** 6.05 x 0.31 x 2.73 inches
- **Item Weight:** 0.01 Kilograms
- **Number of Pieces:** 4
- **UPC:** 780746271437

## Images

![Signo RT1 Gel Ballpoint Pen Blue Black Ink Refills, 0.38mm, Set of 4 (Japan import) [Komainu-Dou Original Package] - Image 1](https://m.media-amazon.com/images/I/816rCVlsAkL.jpg)

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**Shop now:** [https://www.desertcart.ie/products/27509849-signo-rt1-gel-ballpoint-pen-blue-black-ink-refills-0](https://www.desertcart.ie/products/27509849-signo-rt1-gel-ballpoint-pen-blue-black-ink-refills-0)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-25*