---
product_id: 271580694
title: "uni Mechanical Pencil Kurutoga Pipe Slide Model 0.5mm, Black Body (M54521P.24)"
brand: "三菱鉛筆"
price: "€ 23.17"
currency: EUR
in_stock: true
reviews_count: 8
category: "三菱鉛筆"
url: https://www.desertcart.pt/products/271580694-uni-mechanical-pencil-kurutoga-pipe-slide-model-0-5mm-black
store_origin: PT
region: Portugal
---

# Lead auto-rotates for sharpness Ultra-fine 0.5mm line precision Pipe slide protects lead from breakage uni Mechanical Pencil Kurutoga Pipe Slide Model 0.5mm, Black Body (M54521P.24)

**Brand:** 三菱鉛筆
**Price:** € 23.17
**Availability:** ✅ In Stock

## Summary

> ✍️ Stay sharp, write smarter — never settle for dull lines!

## Quick Answers

- **What is this?** uni Mechanical Pencil Kurutoga Pipe Slide Model 0.5mm, Black Body (M54521P.24) by 三菱鉛筆
- **How much does it cost?** € 23.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/271580694-uni-mechanical-pencil-kurutoga-pipe-slide-model-0-5mm-black)

## Best For

- 三菱鉛筆 enthusiasts

## Why This Product

- Trusted 三菱鉛筆 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Efficient Lead Usage:** Uses 50% less lead area than traditional pencils, making your writing last longer.
- • **Precision Meets Comfort:** Contoured grip and fine 0.5mm lead deliver clean, professional lines effortlessly.
- • **Consistent Sharpness, Always:** Innovative core rotation keeps your lead perfectly pointed with every stroke.
- • **Break-Free Writing Experience:** Pipe slide system guards the lead, minimizing breaks and smudges for flawless notes.
- • **Trusted Japanese Craftsmanship:** Uni’s Kurutoga technology, crafted in Japan, ranks top-tier for quality and reliability.

## Overview

The 三菱鉛筆 uni Kurutoga Pipe Slide 0.5mm mechanical pencil features a patented lead rotation mechanism that keeps the tip consistently sharp by incrementally twisting the lead with every lift. Its pipe slide system protects the lead from breaking, ensuring clean, smudge-free writing. Lightweight and ergonomically designed with a contoured grip, this Japanese-engineered pencil maximizes lead efficiency and precision, making it a top choice for professionals and students seeking flawless, reliable writing instruments.

## Description

The Kurutoga Has A Core Rotation Mechanism That Continually Rotates The Pencil Lead As You Write. A Spring-Loaded Clutch Twists The Lead Incrementally Every Time You Lift The Pencil From The Paper. This Allows A Uniform Wearing Of The Lead So That It Always Remains Pointed. This Is Great For Students! It Gives You An Amazingly Thin Line. In Effect, You Use Only 50% Of The Lead Area That You Were Previously Using With Your Old Mechanical Pencil. In Addition, This New Kurutoga Is Equipped With A Pipe Slide System.The Lead Is Difficult To Break As You Write, Due To The Innovative Mechanism. When The Core Is Reduced, The Pipe Gets Shorter At The Same Time. The Guide Pipe Protects The Entire Length Of The Lead. Because There'S No Lead Breakage, Your Papers Remain Clean Without Smudges From Broken Lead Dust.

Review: Great mechanical pencil - This is the solution to crooked lines if you draw with a mechanical pencil. Not to mention less breaking leads.
Review: 👌 - Uni stationary stuff are always the best

## Features

- Lead Rotating Technology Mechanical Pen, Koru Toga
- Country Of Origin : Japan
- Package Weight : 1.0 Lbs
- Package Quantity :1

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B017BDDZ7I |
| Best Sellers Rank | #9,335 in Office Products ( See Top 100 in Office Products ) #62 in Mechanical Pencils |
| Brand | 三菱鉛筆 |
| Closure | Retractable |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (4,601) |
| Date First Available | 7 November 2015 |
| Grip Type | Contoured |
| Ink Color | Black |
| Item Weight | 10 g |
| Line Size | 1_0_1_9mm |
| Manufacturer | Uni |
| Manufacturer Part Number | M54521P.24 |
| Material Type | Plastic Metal |
| Model number | M54521P.24 |
| Number of Items | 1 |
| Pencil Lead Degree (Hardness) | 2B |
| Point Type | Fine |
| Product Dimensions | 19.3 x 1.52 x 5.08 cm; 10 g |
| Size | 1 Count (Pack of 1) |

## Product Details

- **Age range (description):** Teens,Adult
- **Brand:** 三菱鉛筆
- **Colour:** Black
- **Ink colour:** Black
- **Writing instrument form:** Mechanical Graphite Pencil

## Images

![uni Mechanical Pencil Kurutoga Pipe Slide Model 0.5mm, Black Body (M54521P.24) - Image 1](https://m.media-amazon.com/images/I/61h9r6XaRoL.jpg)

## Available Options

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

## Questions & Answers

**Q: This pencil has the retractable tip**
A: Yes it has the retractable tip.  The entire silver metal tip will retract into the black plastic part of the pencil.  When you push the top of the pencil it releases the mechanism in the pencil.  While holding the top of the pencil down just take another finger (or thumb) and gently push the lead.  The lead will go into the silver metal part.  As you continue to gently push, the silver metal tip slides right into the black part.  Just for the record, the only difference between the pencil you asked about and my pencil is the color.  You are asking about the 'black' one (M54521P.24) and my 'blue' pencil's model number is (M54521P.33).  From what I can tell, the only difference is the color.  So yes it does retract. 

The first Uni pencil I bought was Uni-ball Kuru Toga Mechanical Pencil, 0.5 HB #2, 1 count.  The model number for this one is 1751934.  This pencil is black. Under 'Color': (it says) 0.5mm Starter Set  It came in a little cardboard package which included the pencil, a package of 12 - #2 lead refills and a couple extra erasers.  This pencil has the rotating lead mechanism that keeps the pencil sharpened and helps prevent breakage.  

I was real hesitant about buying it because I prefer the heavier metal mechanical pencils.   When looking at this one, it seemed to be mostly plastic.  I love a good mechanical pencil.  I love to write and I love to draw!  I can't stand a cheap mechanical pencil.  It is like this...if it feels good in my hand, I feel I can write better/draw better.  Maybe it is in my head, but I have to have a good pencil.  I ordered a few pencils around the time I got this one.  The other ones were the heavier metal ones I like so well.  As it turned out, I used this one way more than I used the other more expensive ones.  Don't get me wrong...I sure do like the other ones, but there is just something about this Uni pencil I just LOVE!!!  So, after having this one for awhile, I decided to order the other one (the one you are asking about).  They are two different pencils and I LOVE them both!  One difference is, like I said, the pencil you asked about (M54521P.24) is retractable and this one I am telling you about now (the first one I bought...model number 1751934) is not as retractable.  The lead of course is retractable.  Like the one you asked about, you push the top down and you can push the lead inside the metal silver tip.  But that is as far as it goes.  The silver tip does NOT retract into the pencil.  I love both of these pencils.  Not knowing exactly what you are looking for in a pencil, I would say, what the heck...try both of them!!!!!  They are different from each other and I use both of them regularly.  Just my opinion though.  Good luck with your decision.

The other pencil I really like that I bought on Amazon is the Pentel 120 A3 DX  0.5mm - A315.  This one again is mostly plastic with a metal tip.  With this one, the lead will retract, but the silver metal part does not retract.  The one I have is purple and it has a black rubber grippy thingy where you hold on the the pencil.  I like the eraser better on the Pentel, although I usually use one of those stick erasers.

Well, there you go.  I hope this helps.  I know you asked a 'yes' or 'no' question and I wrote you a book.  LOL  If I gave you too much information, please accept my apology.  I hope I didn't get too excited when writing and this makes some sort of sense.  LOL  I just love these pencils and since I didn't know if you were looking for one that retracts or not, I wanted to tell you about the other one I had in case you liked that one better.  Good luck and God bless you!  -------------------  P.S. Just so there is no confusion, the answer to your question is a very simple 'yes'.   :)  :)  :)  :)  :)

**Q: can you refill this pencil with any brand .5mm lead?**
A: Yes, any .5 mm lead will work just fine. There is a special "Kuru Toga" lead, but it's not necessary for the proper operation of the mechanism.

**Q: The writing tip on the black pencil retreats into the pencil whereas the tip on the red pencil does not (it is fixed). Is this normal or is it broken?**
A: Well, the illustration on the back of the package shows the movement of the metal sheath as part of the rotating mechanism, so if it will absolutely not move, even with the top of the pencil depressed, than it might be a defect.  The actual movement of the tip when writing, however, should be fairly subtle.

It could still be functional - if the logo in the clear window rotates, then whether it retracts or not is irrelevant to functionality.  The rotating logo would be the definitive test; my guess is it's a defect, but I can't be 100%...

**Q: Is the clear part a soft material or hard plastic? I have another kuru toga that has a very thin but soft rubber piece where the clear part is.**
A: the clear part is hard plastic

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great mechanical pencil
*by H***A on 7 December 2021*

This is the solution to crooked lines if you draw with a mechanical pencil. Not to mention less breaking leads.

### ⭐⭐⭐⭐⭐ 👌
*by J***S on 16 July 2020*

Uni stationary stuff are always the best

### ⭐⭐⭐⭐ Very good pencil but too light
*by M***J on 6 November 2022*

The pencil writes and draws very well. It stays sharp and the lead does not break easily. The only think I don't like about it is it's too light. It would be better if it was a little weighted / heavier.

## Frequently Bought Together

- Uni Mechanical Pencil Kurutoga Pipe Slide Model 0.5mm, Black Body (M54521P.24)
- Uni Pencil Lead, The Uni" Smudge-Proof Leads, 0.5mm HB, 40 Leads x 5 Pack

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-15*