---
product_id: 496992315
title: "Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool"
brand: "erofa"
price: "$27.85"
currency: USD
in_stock: true
reviews_count: 10
category: "Erofa"
url: https://www.desertcart.us/products/496992315-majohn-p136-fountain-pen-brass-metal-special-wrench-disassembly-tool
store_origin: US
region: United States of America
---

# Durable natural oxidation Precision nib & piston fit Dual-purpose brass wrench Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool

**Brand:** erofa
**Price:** $27.85
**Availability:** ✅ In Stock

## Summary

> 🖋️ Unlock the art of pen care with precision and style!

## Quick Answers

- **What is this?** Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool by erofa
- **How much does it cost?** $27.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/496992315-majohn-p136-fountain-pen-brass-metal-special-wrench-disassembly-tool)

## Best For

- erofa enthusiasts

## Why This Product

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

## Key Features

- • **Premium Brass Build:** Solid brass construction offers durability and a unique aging patina that tells your pen’s story.
- • **Dual-Ended Precision:** Specially crafted ends for nib and piston disassembly ensure flawless maintenance.
- • **Effortless Operation:** Ergonomic wrench design allows smooth counterclockwise rotation for quick, hassle-free pen care.
- • **Tailored for MAJOHN P136:** Engineered specifically for MAJOHN P136 nib and piston groups, guaranteeing perfect compatibility.
- • **Cost-Effective Maintenance:** An affordable, high-performance tool that elevates your pen upkeep without breaking the bank.

## Overview

The Majohn P136 Fountain Pen Brass Metal Special Wrench is a dual-purpose, high-quality brass tool designed specifically for disassembling the nib and piston assembly of MAJOHN P136 fountain pens. Its ergonomic design ensures easy, precise operation, while the natural brass surface develops a unique patina over time. Ideal for pen enthusiasts seeking efficient, cost-effective maintenance.

## Description

Package Include: Wrench x 1 Notice: This item does not contain fountain pen and nib part, need to buy separately.

Review: Not for Montblanc, but works perfect. - Magnificent tool perfect for the maintenance of Montblanc 146 pens to disassemble the piston and the nib. It also works for other Montblanc models, but only for the nib.
Review: Works great for my Montblanc (piston only)! - First off, I bought this for my Montblanc 146 (works for 149 as well since they share the same piston) and I was hoping that this would work for the nib as well, but it does not (6 & 12 - non-modern nib). The notches on the nib end of the wrench (the smaller side) are slightly too big, but are aligned at the 6 & 12 position instead of the modern 8 & 4 position, so one COULD file down the notches a bit, smooth them with some super fine sandpaper and it may just work. But at least I am able to clean the inside of my pen and flush it, which is a good start. Make sure to know and read your pen's warranty (Montblanc) BEFORE doing this, or you will void the warranty if it applies. Mine is vintage, so the warranty no longer applies.

## Features

- Unique Design: Made of quality brass, using special-shaped dual-purpose structure; convenient and efficient, allowing you to easily disassemble the pen nib and piston assembly.
- Special Disassembly Tool: Suitable for MAJOHN P136 pen nib group and piston assembly disassembly, accurate, convenient, let you experience more happiness.
- The Operation is Simple: The wrench can be rotated counterclockwise, or you can hold the wrench and rotate the pen in the opposite direction. Wrench brass surface is not treated, after a long time will appear oxidation blackening and spots and other irregular natural traces, which is normal.
- Clear Function: The small end is used to disassemble the pen nib group, and the big end is used to disassemble the piston assembly. Note: the wrench slot in the heart of the pen nib part is not centered and the wrench is inserted from the big side.
- Economical and Affordable: A tool with strong practicality and high cost performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BPTJQZSY |
| Best Sellers Rank | #215,913 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #678 in Adjustable Wrenches |
| Brand | erofa |
| Customer Reviews | 4.7 4.7 out of 5 stars (26) |
| Date First Available | December 12, 2022 |
| Item Weight | 0.317 ounces |
| Item model number | MNP136-T |
| Manufacturer | erofa |
| Manufacturer Part Number | MNP136-T |
| Material Type | Brass, Metal |
| Number of Items | 1 |
| Package Dimensions | 6.61 x 3.07 x 0.35 inches |
| Size | 1 Count (Pack of 1) |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** erofa
- **Material:** Brass, Metal
- **Special Feature:** Unique Design
- **Writing Instrument Form:** Fountain Pen

## Images

![Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool - Image 1](https://m.media-amazon.com/images/I/41GOCp+5WPL.jpg)
![Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool - Image 2](https://m.media-amazon.com/images/I/41d45CyWhdL.jpg)
![Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool - Image 3](https://m.media-amazon.com/images/I/41fj1AhgHaL.jpg)
![Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool - Image 4](https://m.media-amazon.com/images/I/41iX2q5yhKL.jpg)
![Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool - Image 5](https://m.media-amazon.com/images/I/41r9RAY2UAL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Not for Montblanc, but works perfect.
*by G***S on August 1, 2025*

Magnificent tool perfect for the maintenance of Montblanc 146 pens to disassemble the piston and the nib. It also works for other Montblanc models, but only for the nib.

### ⭐⭐⭐⭐⭐ Works great for my Montblanc (piston only)!
*by E***L on August 28, 2023*

First off, I bought this for my Montblanc 146 (works for 149 as well since they share the same piston) and I was hoping that this would work for the nib as well, but it does not (6 & 12 - non-modern nib). The notches on the nib end of the wrench (the smaller side) are slightly too big, but are aligned at the 6 & 12 position instead of the modern 8 & 4 position, so one COULD file down the notches a bit, smooth them with some super fine sandpaper and it may just work. But at least I am able to clean the inside of my pen and flush it, which is a good start. Make sure to know and read your pen's warranty (Montblanc) BEFORE doing this, or you will void the warranty if it applies. Mine is vintage, so the warranty no longer applies.

### ⭐⭐⭐⭐⭐ Worked with My 1980s Montblanc 146
*by J***E on January 24, 2026*

I purchased the Majohn P136 disassembly tool to service my 1980s Montblanc 146. The piston had become quite stiff and required disassembly for an application of silicone grease. This tool worked perfectly for with my 146 and the piston is now functioning smoothly again. This tool was an excellent value.

## Frequently Bought Together

- erofa Majohn P136 Fountain Pen Brass Metal Special Wrench Disassembly Tool
- Asvine Wrench for Piston and Vacuum Fountain Pens, Set of 2 Removing Tools

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-19*