---
product_id: 10380164
title: "DMT A4X Whetstone Knife Sharpener and Diamond Sharpening Stone for Use with Aligner, 4 Inches, Extra Coarse"
brand: "dmt (diamond machining technology)"
price: "¥7012"
currency: JPY
in_stock: true
reviews_count: 13
category: "Dmt (Diamond Machining Technology)"
url: https://www.desertcart.jp/products/10380164-dmt-a4x-whetstone-knife-sharpener-and-diamond-sharpening-stone-use
store_origin: JP
region: Japan
---

# 60 micron extra-coarse diamond grit 4-inch portable sharpening stone Made in USA durable construction DMT A4X Whetstone Knife Sharpener and Diamond Sharpening Stone for Use with Aligner, 4 Inches, Extra Coarse

**Brand:** dmt (diamond machining technology)
**Price:** ¥7012
**Availability:** ✅ In Stock

## Summary

> 💎 Sharpen smarter, not harder — the pro’s choice for razor edges!

## Quick Answers

- **What is this?** DMT A4X Whetstone Knife Sharpener and Diamond Sharpening Stone for Use with Aligner, 4 Inches, Extra Coarse by dmt (diamond machining technology)
- **How much does it cost?** ¥7012 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/10380164-dmt-a4x-whetstone-knife-sharpener-and-diamond-sharpening-stone-use)

## Best For

- dmt (diamond machining technology) enthusiasts

## Why This Product

- Trusted dmt (diamond machining technology) brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Crafted with premium micronized monocrystalline diamonds for years of consistent, reliable performance.
- • **Oil-Free Sharpening:** Sharpen dry or with water—no messy oils needed for a clean, hassle-free experience.
- • **Pocket-Sized Precision:** Compact 4-inch design fits easily in your toolkit or pocket for sharpening on the go.
- • **Rapid Edge Restoration:** Extra-coarse 220 mesh diamond surface removes material fast to repair damaged blades.
- • **Versatile Pro-Grade Tool:** Ideal for chefs, woodworkers, and professionals maintaining knives, scissors, axes, and more.

## Overview

The DMT A4X Whetstone is a 4-inch extra-coarse (60 micron / 220 mesh) diamond sharpening stone designed for fast, efficient edge repair. Made in the USA with micronized monocrystalline diamonds, it offers durable, oil-free sharpening suitable for professionals and enthusiasts alike. Portable and versatile, it works alone or with DMT’s aligner system to maintain knives, tools, and blades with precision and ease.

## Description

Product Description Our convenient 4-inch diamond knife sharpeners are ideal for fulfilling a variety of sharpening, honing, and filing needs. Designed for use alone or as part of our aligner knife sharpening system, this extra-coarse grit (60 micron / 220 mesh) DMT diamond sharpening stone is made to remove significant material when repairing a damaged edge. This professional knife sharpener will provide years of consistent performance and reliable service, whether you need a kitchen knife sharpener, scissor sharpener, axe sharpener, or pocket knife sharpener. For proper tool maintenance, professionals rely on the superior quality and versatility of USA-made DMT products. From the Manufacturer For professional sharpening results, regardless of skill, depend on DMT Aligner Kits and Accessories. 4" Diamond Whetstone for use with Aligner AHF (Interchangeable Stone Holder). Extra-Coarse diamond (60 micron / 220 mesh) when significant removal of material is needed for a damaged edge. Sharpening with diamonds is fast and easy. No messy oils needed--sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service For proper tool maintenance, woodworkers, chefs and other professionals rely on the superior quality and versatility of DMT products. Made in USA.

Review: DMT has the best diamond stones. - DMT makes the best sharpeners. Others don't use enough diamond to sharpen correctly.
Review: Perfect for the job - These are just the right grit for putting a fine edge back on a slightly dulled knife. Don't recommend them for resharpening. You will need the blue ones for that, or even the black to start a new edge. These are fine for putting back a razor edge on a used blade that is already well sharpened.

## Features

- Knife Sharpening Stone: The micronized monocrystalline diamond surface of this blade sharpener quickly and easily sharpens dull knife and tool edges
- Portable and Easy to Use: Diamond sharpening stone is portable and can be easily carried around in a pocket; Sharpen dry or with water – no need for messy oils
- Versatile Usage: Knife sharpener stone can be used with our aligner or alone for proper tool maintenance by woodworkers, chefs, and other professionals who rely on the superior quality and versatility of DMT products
- Durable Construction: Made from only the highest-quality materials, this 60 micron (220 mesh) diamond stone will provide years of performance and reliable service
- Made In The USA: DMT offers the most efficient sharpening tools on the planet, tools like this diamond knife sharpener – the fastest, easiest, and most effective tool for sharpening an edge
- Portable pocket convenience
- Extra-Coarse diamond to repair a damaged edge
- Sharpens knives faster than conventional stones with DMT's monocrystalline diamond surface
- No oil is needed-sharpen dry or with water
- Durable construction will provide years of consistent performance and reliable service

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00004WFV0 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #270,864 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #560 in Sharpening Stones |
| Brand | DMT (Diamond Machining Technology) |
| Customer Reviews | 4.6 4.6 out of 5 stars (288) |
| Date First Available | January 24, 2007 |
| Global Trade Identification Number | 00017042004439 |
| Grit Rating | 220 |
| Grit Type | Extra Coarse |
| Included Components | Diamond Whetstone |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.96 ounces |
| Item model number | A4X |
| Manufacturer | DMT |
| Material | Micronized Monocrystalline Diamond |
| Measurement System | Metric |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Part Number | A4X |
| Product Dimensions | 8.75"L x 3.25"W x 2.25"H |
| Size | One Size |
| Special Features | Manual |
| Style | Extra-Coarse |
| UPC | 017042004439 |
| Warranty Description | Manufacturer Warranty |

## Product Details

- **Brand:** DMT (Diamond Machining Technology)
- **Global Trade Identification Number:** 00017042004439
- **Grit Type:** Extra Coarse
- **Item Weight:** 0.96 Ounces
- **Manufacturer:** DMT
- **Material:** Micronized Monocrystalline Diamond
- **Number of Items:** 1
- **Product Dimensions:** 8.75"L x 3.25"W x 2.25"H
- **UPC:** 017042004439

## Images

![DMT A4X Whetstone Knife Sharpener and Diamond Sharpening Stone for Use with Aligner, 4 Inches, Extra Coarse - Image 1](https://m.media-amazon.com/images/I/61zkrYqwqOL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ DMT has the best diamond stones.
*by R***O on July 26, 2025*

DMT makes the best sharpeners. Others don't use enough diamond to sharpen correctly.

### ⭐⭐⭐⭐⭐ Perfect for the job
*by W***! on March 17, 2024*

These are just the right grit for putting a fine edge back on a slightly dulled knife. Don't recommend them for resharpening. You will need the blue ones for that, or even the black to start a new edge. These are fine for putting back a razor edge on a used blade that is already well sharpened.

### ⭐⭐⭐⭐⭐ Quality
*by B***O on January 3, 2025*

Value

## Frequently Bought Together

- DMT 4-in. Diamond Whetstone for use with Aligner Extra Coarse Knife Sharpener - Black, N/A
- DMT Aligner Pro Kit

---

## 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/10380164-dmt-a4x-whetstone-knife-sharpener-and-diamond-sharpening-stone-use](https://www.desertcart.jp/products/10380164-dmt-a4x-whetstone-knife-sharpener-and-diamond-sharpening-stone-use)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-26*