--- product_id: 351972913 title: "TSUBOSAN Kosiy Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6" brand: "tsubosan" price: "¥26503" currency: JPY in_stock: true reviews_count: 1 category: "Tsubosan" url: https://www.desertcart.jp/products/351972913-tsubosan-kosiy-japan-hardness-tester-checker-file-hrc40-hrc65-set store_origin: JP region: Japan --- # Compact 20.9cm length for easy handling Precision HRC40-HRC65 range Set of 6 files for versatile testing TSUBOSAN Kosiy Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6 **Brand:** tsubosan **Price:** ¥26503 **Availability:** ✅ In Stock ## Summary > 🛠️ Unlock the secret hardness of your steel—because precision is the new power move. ## Quick Answers - **What is this?** TSUBOSAN Kosiy Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6 by tsubosan - **How much does it cost?** ¥26503 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/351972913-tsubosan-kosiy-japan-hardness-tester-checker-file-hrc40-hrc65-set) ## 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 - • **Complete 6-Piece Set:** Versatile set covers a broad hardness spectrum, perfect for knife makers and metalworkers who demand reliability. - • **Precision Hardness Range:** Accurately tests steel hardness from HRC40 to HRC65, ensuring your materials meet exact standards. - • **Ambidextrous Handle Design:** Ergonomic pull handles with screw attachment fit all users comfortably, enhancing precision and control. - • **Polished Alloy Steel Build:** Durable, corrosion-resistant polished steel files designed for long-lasting performance and professional use. - • **Custom-Fitted Case Included:** Keep your tools organized and protected with a sleek, portable case—because your craft deserves premium care. ## Overview The TSUBOSAN Kosiy Japan-Hardness Tester Checker File Set includes 6 polished alloy steel files designed to test steel hardness from HRC40 to HRC65. Compact and durable, these files come with an ambidextrous handle and a custom-fitted case, making them an essential tool for metalworkers and knife makers seeking reliable, affordable hardness testing without expensive equipment. ## 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: A tad expensive, but - I make knives and can’t afford a Rockwell tester. These are a decent way of testing after heat treatment, but are a bit awkward to understand at first. ## Features - Item Category: Hardware Handle - Item Trademark: TSUBOSAN - Manufacturer: TSUBOSAN FILE CO;, Ltd ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000TGHFLC | | Best Sellers Rank | 96,624 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 110 in Surface & Hardness Testing | | Brand | TSUBOSAN | | Colour | Polished Steel | | Customer Package Type | FFP | | Customer Reviews | 4.8 out of 5 stars 3 Reviews | | Exterior Finish | Polished Steel | | Exterior finish | Polished Steel | | Finish | Polished | | Handle Attachment Mechanism | screw | | Handle Compatibility | Material Specific | | Handle Material | Alloy Steel | | Handle Type | Pull Handle | | Included Components | Custom-fitted case | | Indoor Outdoor Usage | Indoor | | Is Weight Bearing | No | | Is the Product Left or Right Handed? | Ambidextrous | | Item Depth | 10.2 Millimeter | | Item Dimensions L x W | 20.9L x 1W centimetres | | Item Weight | 230 Grams | | Lock Type | No Lock | | Manufacturer | TSUBOSAN FILE CO., Ltd | | Material | Alloy Steel | | Metal | Alloy Steel | | Model Number | JS100 | | Number of Items | 6 | | Part Number | MA00600_4058 | | Product dimensions | 20.9L x 1W centimetres | | Shape | Rectangular | | Special Features | Hardness testing | | Style | Modern | | Theme | Metalworking | | Unit Count | 1.0 count | | Usage | Metalworking | ## Product Details - **Brand:** TSUBOSAN - **Colour:** Polished Steel - **Material:** Alloy Steel - **Product dimensions:** 20.9L x 1W centimetres - **Style:** Modern ## Images ![TSUBOSAN Kosiy Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6 - Image 1](https://m.media-amazon.com/images/I/81z+dP2RMvL.jpg) ![TSUBOSAN Kosiy Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6 - Image 2](https://m.media-amazon.com/images/I/91UfelvyjLL.jpg) ![TSUBOSAN Kosiy Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6 - Image 3](https://m.media-amazon.com/images/I/51xydh8v+kL.jpg) ![TSUBOSAN Kosiy Japan-Hardness Tester Checker File HRC40-HRC65 Set of 6 - Image 4](https://m.media-amazon.com/images/I/21AHjgnZZjL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ A tad expensive, but *by B***S on 4 May 2024* I make knives and can’t afford a Rockwell tester. These are a decent way of testing after heat treatment, but are a bit awkward to understand at first. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/351972913-tsubosan-kosiy-japan-hardness-tester-checker-file-hrc40-hrc65-set](https://www.desertcart.jp/products/351972913-tsubosan-kosiy-japan-hardness-tester-checker-file-hrc40-hrc65-set) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-26*