---
product_id: 479788675
title: "4.37 inch Rollerball Pen Refills, Roller Ball Fine Point 0.5mm, blue Ink Refill Pack of Replaceable Pen Refills Medium Point (6 Pack)"
brand: "aiyiben"
price: "R$172"
currency: BRL
in_stock: true
reviews_count: 5
category: "Aiyiben"
url: https://www.desertcart.com.br/products/479788675-4-37-inch-rollerball-pen-refills-roller-ball-fine-point
store_origin: BR
region: Brazil
---

# 4.37 inch precision length vibrant quick-dry blue ink 0.5mm fine rollerball tip 4.37 inch Rollerball Pen Refills, Roller Ball Fine Point 0.5mm, blue Ink Refill Pack of Replaceable Pen Refills Medium Point (6 Pack)

**Brand:** aiyiben
**Price:** R$172
**Availability:** ✅ In Stock

## Summary

> 🖊️ Elevate your pen game with precision and style—because your ideas deserve the best!

## Quick Answers

- **What is this?** 4.37 inch Rollerball Pen Refills, Roller Ball Fine Point 0.5mm, blue Ink Refill Pack of Replaceable Pen Refills Medium Point (6 Pack) by aiyiben
- **How much does it cost?** R$172 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/479788675-4-37-inch-rollerball-pen-refills-roller-ball-fine-point)

## Best For

- aiyiben enthusiasts

## Why This Product

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

## Key Features

- • **Quick-Dry Ink:** Blue gel ink dries fast to prevent smudges and keep your notes sharp
- • **Value Pack of 6:** Share with colleagues or keep backups handy—never run out mid-meeting
- • **Precision Writing:** 0.5mm fine point delivers crisp, professional lines every time
- • **Sleek Metal Build:** Durable, lightweight metal casing for smooth, premium feel
- • **Universal Compatibility:** Fits a wide range of rollerball pens—extend your favorite pen’s life

## Overview

This 6-pack of 4.37-inch metal rollerball pen refills features a 0.5mm fine point with smooth-flowing, quick-dry blue gel ink. Designed for broad compatibility (excluding Mont Blanc), these refills offer a durable, lightweight build ideal for office, business, and school use. Keep your favorite pens performing at their peak with these reliable, value-packed replacements.

## Description

Good quality metal refills: The high-quality ink provides consistent writing smoothness, the ink dries quickly with a constant ink flow, and does not ooze; it is suitable for many rollerball pen refills. Applications: Refills are suitable for offices, businesses, schools, homes and hotels; lightweight and portable, easy to carry. Expansion of expensive pens you like: When your expensive pen ink is used up and does not need to be thrown away, a good choice. The package contains 6 refills, enough for you to use. specification: Quantity: 6 packs Color: blue ink Material: Metal body Midpoint: 0.5 mm Length: 4.37 inches / 11.1 cm Diameter: 0.236 inches / 0.6 cm Package Included:6 x rollerball pen refill【Please note that this product is not suitable for Mont Blanc pens】

Review: Good replacement for Itoya NPR-5 refill - I can’t comment on how long the ink lasts, but this refill fits in my pen that originally used a Itoya NPR-5 rollerball refill. This generic refill produces a nice thin black line with roughly the same ink flow as the original refill. The price is right. If the ink fails too quickly, I will update, but I’m pleased with my purchase.
Review: Perfetti - Funzionano perfettamente

## Features

- Size: The length of the refill is about 4.37 inches / 11.1 cm, The diameter of the ink resevoir is 0.24 inch / 0.6 cm，the midpoint of 0.5 mm German gel ink.
- Quantity:6 rollerball refits, enough for you to share with your friends. 【Please note that this product is not suitable for Mont Blanc pens】
- Quality: metal material, light and smooth; Ink drying quickly, ink flow consistent, will not ooze.
- Suitable for site: metal rollerball refits are suitable for office, business, school and home.
- Scope of application: Many replaceable rollerball pens are compatible and can extend the life of your favorite expensive pen.One year after-sales service, If our product is not compatible with your rollerball pen, please contact us directly。

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08DRSB1ST |
| Best Sellers Rank | #41,759 in Office Products ( See Top 100 in Office Products ) #374 in Pen Refills |
| Brand | AIYIBEN |
| Brand Name | AIYIBEN |
| Customer Reviews | 4.1 out of 5 stars 1,072 Reviews |
| Ink Color | Blue |
| Item Dimensions | 11.1 x 0.6 x 0.6 centimeters |
| Item Weight | 34 Grams |
| Item dimensions L x W x H | 11.1 x 0.6 x 0.6 centimeters |
| Item weight | 34 Grams |
| Manufacturer | AIYIBEN |
| Manufacturer Part Number | Ink Pen Refills 437 |
| Model Number | Ink Pen Refills 437 |
| Number of Pieces | 6 |
| Number of pieces | 6 |
| Point Type | Medium |
| Point type | Medium |
| Style | Rollerball |
| Unit Count | 6.0 Count |

## Product Details

- **Brand:** AIYIBEN
- **Item dimensions L x W x H:** 11.1 x 0.6 x 0.6 centimeters
- **Item weight:** 34 Grams
- **Number of pieces:** 6
- **Style:** Rollerball

## Images

![4.37 inch Rollerball Pen Refills, Roller Ball Fine Point 0.5mm, blue Ink Refill Pack of Replaceable Pen Refills Medium Point (6 Pack) - Image 1](https://m.media-amazon.com/images/I/51LRJTcpXQL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good replacement for Itoya NPR-5 refill
*by A***R on 29 May 2026*

I can’t comment on how long the ink lasts, but this refill fits in my pen that originally used a Itoya NPR-5 rollerball refill. This generic refill produces a nice thin black line with roughly the same ink flow as the original refill. The price is right. If the ink fails too quickly, I will update, but I’m pleased with my purchase.

### ⭐⭐⭐⭐⭐ Perfetti
*by F***A on 19 December 2025*

Funzionano perfettamente

### ⭐⭐⭐⭐⭐ Sem problemas
*by L***O on 23 May 2023*

Estou usando sem nenhum problema.

## Frequently Bought Together

- 4.37 inch Rollerball Pen Refills, Roller Ball Fine Point 0.5mm, Blue Ink Refill Pack of Replaceable Pen Refills Medium Point (6 Pack)
- Pemmeed Rollerball Pen Refills Smooth Writing German Gel Ink,Parker Waterman Compatible Pen Refills Metal Standard Size Fine Point Black Ink Pack of 10 (Black)

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**Shop now:** [https://www.desertcart.com.br/products/479788675-4-37-inch-rollerball-pen-refills-roller-ball-fine-point](https://www.desertcart.com.br/products/479788675-4-37-inch-rollerball-pen-refills-roller-ball-fine-point)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-08-24*