---
product_id: 20838466
title: "Uni-Ball Jetstream RT BLX 12 Pack, 1.0mm Medium Blue/Black, Wirecutter Best Pen, Ballpoint Pens, Ballpoint Ink Pens | Office Supplies, Ballpoint Pen, Colored Pens, Fine Point, Smooth Writing Pens"
brand: "uni-ball"
price: "Rp1368806"
currency: IDR
in_stock: true
reviews_count: 6
url: https://www.desertcart.id/products/20838466-uni-ball-jetstream-rt-blx-12-pack-1-0mm-medium
store_origin: ID
region: Indonesia
---

# Quick-drying, smudge-resistant ink 1.0mm bold smooth tip Water & fade-resistant archival ink Uni-Ball Jetstream RT BLX 12 Pack, 1.0mm Medium Blue/Black, Wirecutter Best Pen, Ballpoint Pens, Ballpoint Ink Pens | Office Supplies, Ballpoint Pen, Colored Pens, Fine Point, Smooth Writing Pens

**Brand:** uni-ball
**Price:** Rp1368806
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write Boldly, Archive Confidently — The Pen That Means Business

## Quick Answers

- **What is this?** Uni-Ball Jetstream RT BLX 12 Pack, 1.0mm Medium Blue/Black, Wirecutter Best Pen, Ballpoint Pens, Ballpoint Ink Pens | Office Supplies, Ballpoint Pen, Colored Pens, Fine Point, Smooth Writing Pens by uni-ball
- **How much does it cost?** Rp1368806 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/20838466-uni-ball-jetstream-rt-blx-12-pack-1-0mm-medium)

## 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

## Key Features

- • **Ergonomic Elegance:** Comfortable contoured grip with sleek stainless steel accents for all-day professional use.
- • **Always Within Reach:** Retractable design with a sturdy clip keeps your pen ready for action wherever inspiration strikes.
- • **Smudge-Free Mastery:** Quick-drying ink designed to keep your notes pristine, perfect for lefties and fast writers.
- • **Archival Quality Ink:** Water- and fade-resistant formula ensures your documents stand the test of time and scrutiny.
- • **Bold, Smooth Writing:** Experience flawless 1.0mm medium point for confident, vivid strokes every time.

## Overview

The Uni-Ball Jetstream RT BLX 12 Pack features 1.0mm medium ballpoint tips with innovative quick-drying, water- and fade-resistant ink. Designed for professionals who demand smooth, smudge-free writing, these pens combine gel-like vividness with archival durability. Ergonomically crafted with a contoured grip and stainless steel accents, each retractable pen is built for comfort and convenience in any fast-paced office or creative environment.

## Description

Step into a world of timeless elegance and unparalleled craftsmanship with Uniball, a brand that has woven its legacy into the fabric of fine writing instruments. With a heritage rooted in innovation and a commitment to excellence, Uniball has consistently delivered a writing experience that stands the test of time. Immerse yourself in the art of writing with Uniball's meticulously crafted pens, proudly made in Japan. Our legacy of precision and quality is evident in every stroke, ensuring that your thoughts flow seamlessly onto paper with each movement of the pen. From Gel Pens to Rollerball Pens, Ballpoint Pens to Fineliner Pens, and Mechanical Pencils, Uniball offers a comprehensive range that caters to every writing style and preference. Dive into a world of versatility with Uniball's diverse range of tip sizes, spanning from the ultra-micro 0.38 for intricate detailing, to the bold 1.0 for striking emphasis. Whether you're sketching, journaling, note-taking, or bringing ideas to life, Uniball empowers you to effortlessly transition between strokes, giving your writing a unique dimension that captivates the eye and stirs the soul. As you hold a Uniball pen in your hand, you're not just embracing a writing instrument – you're embracing a legacy of craftsmanship, innovation, and the pursuit of perfection. Each pen is a testament to our dedication to providing you with an unmatched writing experience, where every word is an ode to the art of communication. Start your story with Uniball, where heritage meets modernity, and each stroke is an invitation to immerse yourself in a world of boundless expression. Join a community of discerning individuals who appreciate the value of quality, heritage, and the power of the written word. Experience the magic of Uniball for yourself and discover the joy of writing that transcends time and leaves an indelible mark on every page.

## Features

- Ballpoint Pen: Our color-infused black ballpoint pens combine the smooth, vivid writing of a gel pen with the quick-drying, smudge-resistant properties of a ball point ink pen
- uni Super Ink: Water- and fade-resistant ink helps you compose long-lasting, high-quality documents you can archive; Our ink pens offer protection against water, fading, and fraud
- Quick-Drying Technology: Our quick-drying ink resists smudging and smearing, making this medium-point pen ideal for left-handed writers
- Quality Construction: Our writing pens feature a comfortable embossed grip and sleek stainless steel accents; A convenient clip ensures that your favorite ink pen is always at hand
- Premium Performance: Our innovative ballpoint pens are great for all of your personal and professional writing needs; BLX black ink is infused with dramatic color

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | uni-ball |
| Brand | Uni-Ball |
| Item Weight | 5 ounces |
| Product Dimensions | 0.3 x 0.5 x 7.6 inches |
| Item model number | 1858845 |
| Is Discontinued By Manufacturer | No |
| Color | Blue/Black |
| Closure | Retractable |
| Grip Type | Contoured |
| Pencil Lead Degree (Hardness) | HB |
| Material Type | Stainless Steel |
| Number of Items | 1 |
| Size | 12 Count (Pack of 1) |
| Point Type | Bold |
| Line Size | 1.0-1.9mm |
| Ink Color | Blue/Black |
| Manufacturer Part Number | 1858845 |

## Product Details

- **Brand:** Uni-Ball
- **Writing Instrument Form:** Ballpoint Pen
- **Color:** Blue/Black
- **Ink Color:** Blue/Black
- **Age Range (Description):** Adult

## Images

![Uni-Ball Jetstream RT BLX 12 Pack, 1.0mm Medium Blue/Black, Wirecutter Best Pen, Ballpoint Pens, Ballpoint Ink Pens | Office Supplies, Ballpoint Pen, Colored Pens, Fine Point, Smooth Writing Pens - Image 1](https://m.media-amazon.com/images/I/81+981K3rrL.jpg)
![Uni-Ball Jetstream RT BLX 12 Pack, 1.0mm Medium Blue/Black, Wirecutter Best Pen, Ballpoint Pens, Ballpoint Ink Pens | Office Supplies, Ballpoint Pen, Colored Pens, Fine Point, Smooth Writing Pens - Image 2](https://m.media-amazon.com/images/I/61LmLm0eVVL.jpg)
![Uni-Ball Jetstream RT BLX 12 Pack, 1.0mm Medium Blue/Black, Wirecutter Best Pen, Ballpoint Pens, Ballpoint Ink Pens | Office Supplies, Ballpoint Pen, Colored Pens, Fine Point, Smooth Writing Pens - Image 3](https://m.media-amazon.com/images/I/714mYfFliXL.jpg)
![Uni-Ball Jetstream RT BLX 12 Pack, 1.0mm Medium Blue/Black, Wirecutter Best Pen, Ballpoint Pens, Ballpoint Ink Pens | Office Supplies, Ballpoint Pen, Colored Pens, Fine Point, Smooth Writing Pens - Image 4](https://m.media-amazon.com/images/I/71J-oX1ZWSL.jpg)
![Uni-Ball Jetstream RT BLX 12 Pack, 1.0mm Medium Blue/Black, Wirecutter Best Pen, Ballpoint Pens, Ballpoint Ink Pens | Office Supplies, Ballpoint Pen, Colored Pens, Fine Point, Smooth Writing Pens - Image 5](https://m.media-amazon.com/images/I/71nYSrWalsL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love love these pens!
*by R***D on July 28, 2024*

I really do love these pens. They write beautifully and use every last drop of ink. These 2 tones ones are pretty and just plain fun to use. These are getting harder to find. It took a while to receive from the seller, but worth the wait. The pen itself is very comfortable to use and worth every penny. I have been using the Uniball Jetstream RT pens for years because of the comfort. I write all day at work and other pens start to hurt. These never do. I highly recommend them. You won't be disappointed.

### ⭐⭐⭐⭐⭐ Smooth and nice pen.
*by M***S on November 6, 2017*

My new favorite pen. I love the bold-yet-subtle darkish colors, and the smooth 1.0 mm point.The ink doesn't bleed much, which you might think is always a good thing, but one downside of non-bleeding ink is that it can reveal imperfections in your paper. For instance I noticed few seeming "skips" when writing on post-it notes. And I thought, "Why should this good-quality pen skip?"But upon microscopic inspection, I could see that the gaps were caused by places where the paper had imperfections caused by a large wood pulp fiber. Smoother paper looks better under this pen.

### ⭐ Several Pens dried out after less than two months
*by M***E on May 15, 2022*

I have used this brand of pens for years, as they work especially well for me, as a left handed writer. I had never gotten the blue-black, but it is a nice color. Since I purchased them, at least two of the pens have dried out or skipped (write one minute and not the next). For the price, I would think that these should work each and every time until the ink is gone!Update: I have revised my original rating to one star. As I try to use more of the pens from this order, they are dry straight out of the box. I guess I should have tried them all when they were delivered. I will never buy from this seller again.

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-02-28*