---
product_id: 51757671
title: "TSUBOSAN Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6"
brand: "tsubosan"
price: "$152.41"
currency: USD
in_stock: true
reviews_count: 8
category: "Tsubosan"
url: https://www.desertcart.us/products/51757671-tsubosan-japan-hardness-tester-checker-file-hrc40-hrc65-set-6
store_origin: US
region: United States of America
---

# Compact custom-fitted case Precision HRC40-HRC65 range Set of 6 calibrated files TSUBOSAN Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6

**Brand:** tsubosan
**Price:** $152.41
**Availability:** ✅ In Stock

## Summary

> 🛠️ Master your metal game with precision and style!

## Quick Answers

- **What is this?** TSUBOSAN Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6 by tsubosan
- **How much does it cost?** $152.41 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/51757671-tsubosan-japan-hardness-tester-checker-file-hrc40-hrc65-set-6)

## Best For

- tsubosan enthusiasts

## Why This Product

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

## Key Features

- • **Portable & Organized:** Custom-fitted case keeps all 6 files neatly stored and ready for on-the-go testing.
- • **User-Friendly Design:** Ambidextrous pull handles and easy-to-use format make hardness testing effortless for any craftsman.
- • **Durable Alloy Steel Build:** Polished high-speed steel files ensure long-lasting performance and consistent results.
- • **Cost-Effective Alternative:** Skip expensive machines—get reliable hardness testing at a fraction of the cost.
- • **Accurate Hardness Verification:** Confidently confirm steel hardness from HRC40 to HRC65 with precision files trusted by pros.

## Overview

The TSUBOSAN Japan-Hardness Tester Checker Set includes 6 polished alloy steel files calibrated from HRC40 to HRC65, enabling precise hardness testing of steel materials without scratching. Trusted by knife makers and metalworkers alike, this compact, durable set offers a cost-effective, portable solution for verifying heat treatment quality with professional-grade accuracy.

## Description

This product is a steel file for checking the hardness of steel materials. If the file does not scratch the steel, it is judged that the hardness of the steel material is higher than the height printed on the file.

Review: Must have for the knife maker! - Excellent quality and super handy for the knife and tool maker to check your hardness after heat treatment. This is a very affordable alternative to expensive HRC machines and worth the money.
Review: Translated Instructions - I just received these, so haven't used them yet. I noticed the instructions are in Japanese, and other reviewers have commented on it. So, I translated the instructions using the Google translate app on my Android phone. Here it is, without editing: About “hardness check” ■This product comes in a set of 6 and is a measuring tool that can easily test hardness ranging from HRC40 to 65. ■It is easy to carry and is useful when large workpieces cannot be put on a testing machine, or for finding the hardness of steel materials outdoors. ■It is useful for checking the hardness of materials before cutting. ■It is useful for checking whether the hardness achieved after heat treatment is reached or not. ■The grips are available in six different colors and have anti-slip properties. (How to use) ■ Remove any rust from the test material beforehand. If the tester scratches the object when you press and rub it, the hardness is below the hardness indicated on the tester. If the object is not scratched, check it with a tester of the next rank. ■The tip of the tester is bent, so it may be damaged on flat, curved or internal surfaces. The hardness of the radial surface can be checked. (Specification) $4.3×175m (blade length 65㎡) color express red Tester's actual hard surface HRC 40 HRC40~42 HV392~412 HRC 45 HRC45~47 HV446~471 Yellow green HRC 50 HRC50~52 HV513~544 HRC 55 HRC55~57 HV595-633 HRC 60 HRC60~62 HV697~746 black HRC 65 HRC64~66 HV800~865 *The displayed hardness includes an upward error of 2 degrees in HRC. TSUBOSAN FILE CO., LTD.

## Features

- Item Category: Hardware Handle
- Item Trademark: TSUBOSAN
- Manufacturer: TSUBOSAN FILE CO;, Ltd

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000TGHFLC |
| Additional Features | Easy to Install |
| Brand Name | TSUBOSAN |
| Color | Multicolor |
| Customer Reviews | 4.7 4.7 out of 5 stars (489) |
| Exterior Finish | High speed steel |
| Finish Types | Polished |
| Hand Orientation | Ambidextrous |
| Handle Attachment Mechanism | False |
| Handle Compatibility | Material Specific |
| Handle Material | Alloy Steel |
| Handle Type | Pull Handle |
| Included Components | [Hardness testing files, Custom-fitted case] |
| Indoor Outdoor Usage | Indoor |
| Is Weight Bearing | No |
| Item Weight | 230 Grams |
| Manufacturer | TSUBOSAN FILE CO., Ltd |
| Manufacturer Part Number | MA00600_4058 |
| Material Type | Alloy Steel |
| Metal Type | Alloy Steel |
| Model Number | JS100 |
| Number of Items | 6 |
| Shape | Rectangular |
| Style Name | Modern |
| Theme | Metalworking |
| Unit Count | 1 Count |

## Product Details

- **Brand:** TSUBOSAN
- **Color:** Multicolor
- **Exterior Finish:** High speed steel
- **Material:** Alloy Steel
- **Style:** Modern

## Images

![TSUBOSAN Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6 - Image 1](https://m.media-amazon.com/images/I/81z+dP2RMvL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Must have for the knife maker!
*by A***R on July 22, 2025*

Excellent quality and super handy for the knife and tool maker to check your hardness after heat treatment. This is a very affordable alternative to expensive HRC machines and worth the money.

### ⭐⭐⭐⭐⭐ Translated Instructions
*by J***S on January 14, 2025*

I just received these, so haven't used them yet. I noticed the instructions are in Japanese, and other reviewers have commented on it. So, I translated the instructions using the Google translate app on my Android phone. Here it is, without editing: About “hardness check” ■This product comes in a set of 6 and is a measuring tool that can easily test hardness ranging from HRC40 to 65. ■It is easy to carry and is useful when large workpieces cannot be put on a testing machine, or for finding the hardness of steel materials outdoors. ■It is useful for checking the hardness of materials before cutting. ■It is useful for checking whether the hardness achieved after heat treatment is reached or not. ■The grips are available in six different colors and have anti-slip properties. (How to use) ■ Remove any rust from the test material beforehand. If the tester scratches the object when you press and rub it, the hardness is below the hardness indicated on the tester. If the object is not scratched, check it with a tester of the next rank. ■The tip of the tester is bent, so it may be damaged on flat, curved or internal surfaces. The hardness of the radial surface can be checked. (Specification) $4.3×175m (blade length 65㎡) color express red Tester's actual hard surface HRC 40 HRC40~42 HV392~412 HRC 45 HRC45~47 HV446~471 Yellow green HRC 50 HRC50~52 HV513~544 HRC 55 HRC55~57 HV595-633 HRC 60 HRC60~62 HV697~746 black HRC 65 HRC64~66 HV800~865 *The displayed hardness includes an upward error of 2 degrees in HRC. TSUBOSAN FILE CO., LTD.

### ⭐⭐⭐⭐⭐ Good enough!
*by J***D on May 1, 2024*

By golly, the dang things work. I trust them. I used them on mild carbon steel axes I knew from manufacturer specs to be between 50 and 55 rockwell, and that's what these indicated as well. I used them on steel I expected to be at or just under 60, bang on. And then I used them on metal I had suspected was not tempered corrected, sub 50. Well below 50. And guess what? These files told me it was below 45. They worked! (How many times will they work? Well... I figure I'll get my money's worth out of them for my purposes, as I don't need to test EVERYTHING. Just double check when I suspect something is off.

## Frequently Bought Together

- TSUBOSAN Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6
- Mr Volcano Parks 50 Quench Oil for Heat Treating Steel and Knife Steel - 1 Gallon
- Tungsten Carbide File Guide for knife maker GEN 2 by Derraco Engineering

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-20*