---
product_id: 15212053
title: "Diamond Sharpener Medium - #400"
brand: "atoma"
price: "E£ 11935"
currency: EGP
in_stock: true
reviews_count: 13
category: "Atoma"
url: https://www.desertcart.com.eg/products/15212053-diamond-sharpener-medium-400
store_origin: EG
region: Egypt
---

# Premium diamond grit #400 Compact 8" x 2.77" size Lightweight 1.32 lbs Diamond Sharpener Medium - #400

**Brand:** atoma
**Price:** E£ 11935
**Availability:** ✅ In Stock

## Summary

> 💎 Sharpen like a pro, stay ahead of the curve!

## Quick Answers

- **What is this?** Diamond Sharpener Medium - #400 by atoma
- **How much does it cost?** E£ 11935 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/15212053-diamond-sharpener-medium-400)

## Best For

- atoma enthusiasts

## Why This Product

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

## Key Features

- • **Ergonomic Compact Design:** Sized at 8" x 2.77" for easy handling and storage in any professional kitchen setup.
- • **Trusted by Culinary Pros:** Used to sharpen over 30 chef-sized knives with effortless touch-ups and minimal pressure.
- • **Durable & Consistent Coating:** Flat, consistent diamond clusters ensure long-lasting performance and quick cutting action.
- • **Multi-Functional Sharpening Tool:** Ideal for high carbide steel knives and perfect as a step in your sharpening progression.
- • **Precision Medium Grit Diamond Surface:** Achieve a razor-sharp edge with the perfect #400 grit for versatile sharpening.

## Overview

The Atoma Diamond Sharpener Medium (#400 grit) is a premium, durable sharpening tool designed for professional and home chefs alike. Featuring a flat, consistent diamond coating on a compact 8" x 2.77" surface, it delivers fast, precise edge refinement for high carbide steel knives. Lightweight and built to last, it’s a trusted choice for maintaining razor-sharp blades with minimal effort.

## Description

Grit: Medium Rough #400;Type: Diamond;Size: 8" x 2.77" x .32" H

Review: Great diamond stones. - Excellent diamond stone. Flat, consistent diamond coating and it plain works as intended. They do cut quickly. Have not had my 400, 600 or 1200 very long to gauge long term. These have seen about 30 chef sized knives and done touch-up for smaller ones. A drop of dish soap works well for me with a basic water wetting base. The three letter that starts with d lasted me 28 years worth of on-off hand sharpening. (I have a jig for the Burr King though I like to be able to do it manually.)
Review: Excellent Coarse Diamond Plate - High quality coarse diamond plate. Vastly superior to DMT. No grit contamination. Flat. Great 1 and done plate for high carbide steel knives when desiring a toothy edge. Also works well as part of a progression to finer stones. Lasts a long time with light pressure. Alternatively can be used to lap water stones. Can be a little finicky to apex or microbevel on atoma plates because of the design of the diamond grid clusters. Some may prefer continuous diamond plates (ie without discrete clusters) such as Sharpal. Really a preference thing.

## Features

- Grit: Medium Rough #400
- Type: Diamond
- Size: 8" x 2.77" x .32"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0031KNR2O |
| Best Sellers Rank | #49,241 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #186 in Knife Sharpeners |
| Brand | Atoma |
| Color | Gray |
| Customer Reviews | 4.8 4.8 out of 5 stars (656) |
| Date First Available | December 21, 2009 |
| Department | unisex |
| Global Trade Identification Number | 04954452126671 |
| Grit Type | Medium |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.32 pounds |
| Item model number | 78DIASHARP |
| Manufacturer | Atoma |
| Material | Diamond |
| Number of Items | 1 |
| Product Dimensions | 8"L x 2.77"W x 0.32"H |
| UPC | 798527543871 789246562458 |

## Product Details

- **Brand:** Atoma
- **Color:** Gray
- **Global Trade Identification Number:** 04954452126671
- **Grit Type:** Medium
- **Item Weight:** 0.6 Kilograms
- **Manufacturer:** Atoma
- **Material:** Diamond
- **Number of Items:** 1
- **Product Dimensions:** 8"L x 2.77"W x 0.32"H
- **UPC:** 798527543871 789246562458

## Images

![Diamond Sharpener Medium - #400 - Image 1](https://m.media-amazon.com/images/I/61qBLDNtxbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great diamond stones.
*by M***. on January 28, 2026*

Excellent diamond stone. Flat, consistent diamond coating and it plain works as intended. They do cut quickly. Have not had my 400, 600 or 1200 very long to gauge long term. These have seen about 30 chef sized knives and done touch-up for smaller ones. A drop of dish soap works well for me with a basic water wetting base. The three letter that starts with d lasted me 28 years worth of on-off hand sharpening. (I have a jig for the Burr King though I like to be able to do it manually.)

### ⭐⭐⭐⭐⭐ Excellent Coarse Diamond Plate
*by A***R on September 4, 2025*

High quality coarse diamond plate. Vastly superior to DMT. No grit contamination. Flat. Great 1 and done plate for high carbide steel knives when desiring a toothy edge. Also works well as part of a progression to finer stones. Lasts a long time with light pressure. Alternatively can be used to lap water stones. Can be a little finicky to apex or microbevel on atoma plates because of the design of the diamond grid clusters. Some may prefer continuous diamond plates (ie without discrete clusters) such as Sharpal. Really a preference thing.

### ⭐⭐⭐⭐⭐ Great for Lapping whetstones.
*by C***B on July 21, 2025*

These Atoma 400 plates are awesome. I use mine specifically to flatten my Shapton 2000 grit stone, and it performs the task perfectly. One word of advice: if you get one for lapping, only use it as a lapping plate. I made the mistake of using my first one to reprofile a carbon steel knife. After several uses and exposure to water during lapping, the embedded metal shavings rusted, and I could feel it start to lose cutting performance. Other than that, it's a fantastic tool—highly recommended as a dedicated lapping or sharpening plate.

## Frequently Bought Together

- Atoma Diamond Sharpener Medium - #400
- Atoma Diamond Plate Knife Sharpening Flattening Whetstone #1200
- Atoma Diamond Sharpener Fine - #600

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**Shop now:** [https://www.desertcart.com.eg/products/15212053-diamond-sharpener-medium-400](https://www.desertcart.com.eg/products/15212053-diamond-sharpener-medium-400)

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-03-20*