---
product_id: 82357601
title: "DMT 4-in. Diamond Whetstone for use with Aligner Extra Coarse Knife Sharpener - Black, N/A"
brand: "dmt"
price: "$74"
currency: NZD
in_stock: true
reviews_count: 9
category: "Dmt"
url: https://www.desertcart.nz/products/82357601-dmt-4-in-diamond-whetstone-for-use-with-aligner-extra
store_origin: NZ
region: New Zealand
---

# Extra-Coarse 60 micron diamond grit Compact 4-inch portable size Durable, long-lasting construction DMT 4-in. Diamond Whetstone for use with Aligner Extra Coarse Knife Sharpener - Black, N/A

**Brand:** dmt
**Price:** $74
**Availability:** ✅ In Stock

## Summary

> 💎 Sharpen smarter, not harder — edge perfection anywhere, anytime!

## Quick Answers

- **What is this?** DMT 4-in. Diamond Whetstone for use with Aligner Extra Coarse Knife Sharpener - Black, N/A by dmt
- **How much does it cost?** $74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/82357601-dmt-4-in-diamond-whetstone-for-use-with-aligner-extra)

## Best For

- dmt enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Robust synthetic construction ensures years of consistent, professional-grade performance
- • **Trusted by Pros:** Preferred by chefs, woodworkers, and craftsmen for reliable, razor-sharp results
- • **No-Mess Sharpening:** Sharpen dry or with water—no oils needed for a clean, hassle-free experience
- • **Rapid Edge Revival:** Extra-coarse 220 mesh diamond surface removes material fast for damaged blades
- • **Pocket-Sized Precision:** Compact 4-inch design fits perfectly in your toolkit for on-the-go sharpening

## Overview

The DMT 4-inch Extra-Coarse Diamond Whetstone delivers fast, efficient sharpening with its 60 micron monocrystalline diamond surface. Designed for portability and durability, it requires no oil and works dry or wet, making it ideal for professionals and enthusiasts needing quick edge repair on knives and tools. Made in the USA, this whetstone offers years of reliable performance in a compact form factor.

## Description

Product Description 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. Safety Warning WARNING: use of this product can expose you to chemicals including nickel which is known to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Manufacturer's Description Dmt Pocket Whetstone - Extra Coarse.A Pocket model Diamond Whetstone sized for working in close quarters and for portability. Supplied in a Plastic Sheath.Used for sharpening T/C router bits and knife blades.Size : 4inGrade : Extra Coarse 220g. - Black. See more

Review: Excellent product. - I use this product for putting a final edge before stropping onto my kitchen knives. Believe me they are not razor sharp. As DMT advise the diamond stone takes a short while to bed in but once it does, it works just as it should. Very pleased!
Review: Very Good - Well made & sharpens my knives like razors. Only problem is would like to purchase one that was big enough to fit a sharpening stone block as this one being hand held does not give you complete control with the angles.

## Features

- 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 Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 248,116 in DIY & Tools ( See Top 100 in DIY & Tools ) 287 in Sharpening Stones |
| Certification | No |
| Colour | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (307) |
| Date First Available | 11 Jan. 2007 |
| Grit Description | Extra Coarse |
| Grit Number | 220 |
| Included Components | Diamond Whetstone |
| Item Package Quantity | 1 |
| Item Weight | 27.2 g |
| Item model number | A4X |
| Manufacturer | DMT |
| Material | Synthetic |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part Number | A4X |
| Product Dimensions | 22.23 x 8.26 x 5.72 cm; 27.22 g |
| Size | One Size |
| Special Features | Manual |
| Style | 4-in. Diamond Whetstone for use with Aligner Extra Coarse |

## Product Details

- **Brand:** DMT
- **Colour:** Black
- **Global Trade Identification Number:** 00017042004439
- **Grit type:** Extra Coarse
- **Item weight:** 0.96 Ounces
- **Manufacturer:** DMT
- **Material:** Synthetic
- **Number of items:** 1
- **Product dimensions:** 22.2L x 8.3W x 5.7H centimetres
- **UPC:** 017042004439

## Images

![DMT 4-in. Diamond Whetstone for use with Aligner Extra Coarse Knife Sharpener - Black, N/A - Image 1](https://m.media-amazon.com/images/I/61zkrYqwqOL.jpg)
![DMT 4-in. Diamond Whetstone for use with Aligner Extra Coarse Knife Sharpener - Black, N/A - Image 2](https://m.media-amazon.com/images/I/51MvlM076iL.jpg)
![DMT 4-in. Diamond Whetstone for use with Aligner Extra Coarse Knife Sharpener - Black, N/A - Image 3](https://m.media-amazon.com/images/I/71Qj6kjmyIL.jpg)
![DMT 4-in. Diamond Whetstone for use with Aligner Extra Coarse Knife Sharpener - Black, N/A - Image 4](https://m.media-amazon.com/images/I/41YBZS2tq2L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent product.
*by A***R on 15 October 2021*

I use this product for putting a final edge before stropping onto my kitchen knives. Believe me they are not razor sharp. As DMT advise the diamond stone takes a short while to bed in but once it does, it works just as it should. Very pleased!

### ⭐⭐⭐⭐⭐ Very Good
*by T***I on 22 May 2016*

Well made & sharpens my knives like razors. Only problem is would like to purchase one that was big enough to fit a sharpening stone block as this one being hand held does not give you complete control with the angles.

### ⭐⭐⭐⭐ Not the advertised/named length
*by D***Y on 28 January 2026*

This is sold as a 4 inch whetstone. It's actual length is 4.4", worth noting if you need to mount this in anything that requires a specific length. Otherwise this is very good.

## Frequently Bought Together

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

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-23*