---
product_id: 355697222
title: "40x20mm Super Strong Neodymium Disc Magnet, N52 Permanent Magnet Disc, The World's Strongest & Most Powerful Rare Earth Magnets - Two Piece"
brand: "diymag"
price: "314.27 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Diymag"
url: https://www.desertcart.tn/products/355697222-40x20mm-super-strong-neodymium-disc-magnet-n52-permanent-magnet-disc
store_origin: TN
region: Tunisia
---

# 40x20mm precision size N52 - World's strongest grade Triple-layer Ni-Cu-Ni coating 40x20mm Super Strong Neodymium Disc Magnet, N52 Permanent Magnet Disc, The World's Strongest & Most Powerful Rare Earth Magnets - Two Piece

**Brand:** diymag
**Price:** 314.27 DT
**Availability:** ✅ In Stock

## Summary

> 🧲 Power in your palm: The magnet that means business.

## Quick Answers

- **What is this?** 40x20mm Super Strong Neodymium Disc Magnet, N52 Permanent Magnet Disc, The World's Strongest & Most Powerful Rare Earth Magnets - Two Piece by diymag
- **How much does it cost?** 314.27 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/355697222-40x20mm-super-strong-neodymium-disc-magnet-n52-permanent-magnet-disc)

## Best For

- diymag enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable triple-layer nickel-copper-nickel coating ensures corrosion resistance and long-term reliability.
- • **Versatile & Engaging:** Ideal for physics demos, executive desk toys, or creative DIY projects that demand premium magnetic strength.
- • **Extreme Safety Required:** Handle with care—these magnets snap together with intense force, making them a serious tool for pros only.
- • **Unmatched Magnetic Power:** Experience the sheer force of N52, the strongest neodymium magnet grade on the market.
- • **Precision Engineered Dimensions:** Perfectly sized at 40x20mm with tight 0.2mm tolerances for seamless integration in your projects.

## Overview

The DIYMAG 40x20mm Super Strong Neodymium Disc Magnet is a premium N52 grade rare earth magnet, delivering unparalleled magnetic strength in a compact 40x20mm disc. Featuring a robust triple-layer nickel-copper-nickel coating, it offers exceptional durability and corrosion resistance. Sold as a two-piece set, these magnets are engineered with tight dimensional tolerances for precision use in scientific demonstrations, executive toys, and advanced DIY applications. Caution is essential due to their extreme magnetic force.

## Description

DIYMAG 40x20mm Super Strong Neodymium Disc Magnet, N52 Permanent Magnet Disc, The World's Strongest & Most Powerful Rare Earth Magnets - Two Piece : desertcart.ae: Kitchen

Review: قوة قوية
Review: First, these are INSANELY strong magnets. I used them for a physics demonstration, and one of my students was not careful to empty their pockets before handling the magnet and it wiped the magnetic strip on his student I.D. in an instant. They will wreck havoc on your cellphone or computer. Not a toy by any stretch. These magnets are very difficult to separate, even if you are strong, and if they are anywhere near each other, they will come together so violently that they will chip or shatter each other. TAKE CARE! There is very little that you can do to keep these from smashing together once they are less than 5" away from each other. It hurts real pain to get your fingers involved between these. The little plastic spacer provided is not sufficient. I keep mine separated by a 1/2" thick piece of wood, and I can just barely get them apart that way when I want to use them. These are a great value though, super strong, and they perform better than I expected. Hours of fun with steel ball bearings or ferrofluid, and great for all kinds of demonstrations on magnetism.

## Features

- EXTREME DURABILITY - Nickel-Copper-Nickel triple layer coating for superior durability.
- DIMENSION - Diameter 40mm x thickness 20mm(approx.1.57"x0.79" ).Tolerances: 0.2mm x 0.2mm.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07KF61YZT |
| Best Sellers Rank | #107,184 in Kitchen ( See Top 100 in Kitchen ) #968 in Refrigerator Magnets |
| Brand Name | DIYMAG |
| Color | silver |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,720) |
| Item Dimensions L x W x Thickness | 40L x 20W x 20Th millimeters |
| Item Thickness | 20 Millimeters |
| Manufacturer | DIYMAG |
| Material Type | Neodymium |
| Number of Pieces | 2 |
| Part Number | D40x20-2P-NEW |
| Shape | Round |
| UPC | 616833187896 850077560187 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** DIYMAG
- **Colour:** silver
- **Material:** Neodymium
- **Product dimensions:** 40L x 20W x 20Th millimeters
- **Shape:** Round

## Images

![40x20mm Super Strong Neodymium Disc Magnet, N52 Permanent Magnet Disc, The World's Strongest & Most Powerful Rare Earth Magnets - Two Piece - Image 1](https://m.media-amazon.com/images/I/61XdXP5jGHL.jpg)

## Questions & Answers

**Q: Why are neodymium magnets so fragile?**
A: Neodymium magnets aren't actually made from solid blocks of metal, but rather from compacting large quantities of powder into blocks through a process called sintering. They tend to break easily when subjected to sudden impact.

**Q: Why should you be careful when using it?**
A: Its magnetic force is very strong, and your fingers may be caught between the two magnets accidentally, which may cause your fingers to be pinched, so children should be kept away from it.

**Q: How to separate two magnets correctly?**
A: Place two magnets on the edge of a table, push down on the outer magnet, and once they are separated, quickly move them far enough apart to prevent them from being attracted to each other again.

**Q: Why keep magnets away from electronic devices such as mobile phones?**
A: Magnets have strong magnetism and can interfere with electronic devices such as mobile phones and computers, causing data loss or damage.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by W***R on 21 March 2024*

قوة قوية

### ⭐⭐⭐⭐ Review
*by B***R on 21 October 2020*

First, these are INSANELY strong magnets. I used them for a physics demonstration, and one of my students was not careful to empty their pockets before handling the magnet and it wiped the magnetic strip on his student I.D. in an instant. They will wreck havoc on your cellphone or computer. Not a toy by any stretch. These magnets are very difficult to separate, even if you are strong, and if they are anywhere near each other, they will come together so violently that they will chip or shatter each other. TAKE CARE! There is very little that you can do to keep these from smashing together once they are less than 5" away from each other. It hurts real pain to get your fingers involved between these. The little plastic spacer provided is not sufficient. I keep mine separated by a 1/2" thick piece of wood, and I can just barely get them apart that way when I want to use them. These are a great value though, super strong, and they perform better than I expected. Hours of fun with steel ball bearings or ferrofluid, and great for all kinds of demonstrations on magnetism.

### ⭐⭐⭐⭐⭐ Review
*by D***N on 24 March 2026*

Wow, these are strong. Be careful with them great product or excellent for my pick when I’m prospecting save a lot of time and digging square nails pieces of iron third shot, etc..

## Frequently Bought Together

- DIYMAG Strong Neodymium Magnet, 40x20mm Rare Earth Magnets High Power Round Large Magnetic Permanent Disc Magnets Remover Tools 2 Piece
- DIYMAG 40x40x20mm Super Strong Neodymium Block Magnet Cubes N52 Permanent Magnet Disc
- LOVIMAG Super Strong Neodymium Disc Magnets, Powerful Rare Earth Magnet with Double-Sided Adhesive for Fridge, DIY, Building, Scientific, Craft, and Office Magnetic - 1.26 inch x 1/8 inch, Pack of 12

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-15*