---
product_id: 20388817
title: "(1-Piece) Grade N45 3x1/2x1/4 Neodymium Bar Magnet with 3M Foam Adhesive | Strong, Rectangle, Triple-Layer Coating, Rare Earth | Crafting, School Project, DYI, Science, Research"
brand: "cms magnetics"
price: "21825CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Cms Magnetics"
url: https://www.desertcart.sn/products/20388817-1-piece-grade-n45-3x1-2x1-4-neodymium-bar-magnet
store_origin: SN
region: Senegal
---

# 3 x 0.5 x 0.25 inch compact size 33 lbs pull force Triple-layer corrosion-resistant coating (1-Piece) Grade N45 3x1/2x1/4 Neodymium Bar Magnet with 3M Foam Adhesive | Strong, Rectangle, Triple-Layer Coating, Rare Earth | Crafting, School Project, DYI, Science, Research

**Brand:** cms magnetics
**Price:** 21825CFA
**Availability:** ✅ In Stock

## Summary

> 🧲 Small magnet, massive impact—grab yours before it’s gone!

## Quick Answers

- **What is this?** (1-Piece) Grade N45 3x1/2x1/4 Neodymium Bar Magnet with 3M Foam Adhesive | Strong, Rectangle, Triple-Layer Coating, Rare Earth | Crafting, School Project, DYI, Science, Research by cms magnetics
- **How much does it cost?** 21825CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/20388817-1-piece-grade-n45-3x1-2x1-4-neodymium-bar-magnet)

## Best For

- cms magnetics enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Adhesion:** Includes premium 3M double-sided foam adhesive for secure, damage-free mounting on any surface—stick and stay ahead.
- • **Versatile Use Cases:** Perfect for everything from school projects and crafting to industrial applications and innovative problem-solving hacks.
- • **Durability Meets Design:** Triple-layer nickel-copper-nickel coating ensures long-lasting corrosion resistance and professional-grade reliability.
- • **Unmatched Magnetic Strength:** Grade N45 rare earth magnet delivers a powerful 33-pound pull force—hold tight or risk losing out!
- • **Precision Engineered Dimensions:** Compact 3" x ½" x ¼" size fits seamlessly into your DIY projects, crafts, or scientific experiments.

## Overview

CMS MAGNETICS Grade N45 Neodymium Bar Magnet is a compact yet incredibly powerful rare earth magnet with a 33-pound pull force. Measuring 3 x ½ x ¼ inches, it features a triple-layer nickel-copper-nickel coating for superior corrosion resistance and includes a 3M foam adhesive for easy mounting. Ideal for crafting, DIY, scientific research, and industrial uses, this magnet combines precision engineering with durable design to meet the demands of professionals and hobbyists alike.

## Description

CMS MAGNETICS - (1-Piece) Grade N45 3x1/2x1/4 Neodymium Bar Magnet with 3M Foam Adhesive | Strong, Rectangle, Triple-Layer Coating, Rare Earth | Crafting, School Project, DYI, Science, Research: desertcart.com: Industrial & Scientific

Review: Strength to size ratio - I'm a wet shaver and I often have 1/2 of a double edged razor blade sitting around. I bought this so I wouldn't set a razor blade where it will get lost and/or eventually found by accident along with cutting a finger. When I break a blade I store the unused half in its wrapper and attach it to the magnet. This magnet is perfect. The blades won't move. I have to slide them off. It doesn't work to pull them directly or it will bend the blade. It's very small so it fits on my shaving shelf and very strong so it holds the blade until I'm ready to slide it off and use it. The magnet big enough it won't easily get lost. One word of warning. I had one of these magnets and I let it get too close to another magnet. They slammed together and broke. Just be aware of how hard this will slam into something magnetic or worse yet, another magnet. I actually think you could get a nasty pinch.
Review: Works for my weird scenario - Very powerful, I mean once you get it attached to something, it will be VERY HARD to get it off. I had to use a hammer to get it off! This is one strong magnet. I use it for a weird purpose: as part of trying to install a running board on my SUV, I dropped one of the holding bolts into a part of undercarriage that is SEALED - so there is no way to retrieve that bolt! After suffering weeks of rattling bolt every time I accelerate and decelerate, I went NUTS. I had to do something about it, it was driving me crazy. Tried a bunch of different things to retrieve the bolt, but without cutting thru metal on my expensive SUV, there seemed no way. Then finally it hit me! I could buy a strong magnet and fish out the bolt closer to the tiny entrance [thru which it fell in the first place]. But that proved very hard too (because the undercarriage is also made of magnetic material - aka iron :). So I decided to leave the magnet in hopes that that would hold the bolt in place. That finally helped - once the bolt rolled itself into position (that took a week of rough driving, lol), the magnet did its job and held the bolt in place - the rattle is finally gone! I might buy a few more of these and put them a few inches apart to keep the bolt from ever escaping the death grip of magnetism!

## Features

- INCLUDES - One piece of bar magnet that's 3 x 1/2 x 1/4 inch and a 3M double-sided foam adhesive
- PULL RATING - With an N45 grade, this magnet's dimension will carry a pull rating of about 33-pounds.
- MAGNETIZATION - Magnetized Through the 1/4" Thickness, the Poles are on the 3 x 1/2" surfaces.
- QUALITY - This magnet is made from high quality rare earth and is coated in triple coating of nickel + copper + nickel to protect from corrosion. Machine calibrated for precision.
- SAFETY - Please keep these strong magnets away from pace makers, children, and animals. All magnets are highly brittle and may shatter on strong impact with other magnets or ferromagnetic metals.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0181LX5Q0 |
| Best Sellers Rank | #224,753 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #810 in Rare Earth Magnets |
| Brand | CMS MAGNETICS |
| Brand Name | CMS MAGNETICS |
| Color | Silver |
| Customer Reviews | 4.6 out of 5 stars 1,061 Reviews |
| Item Dimensions L x W x Thickness | 3"L x 0.5"W x 0.25"Th |
| Item Thickness | 0.25 inches |
| Manufacturer | CMS Magnetics, Inc. |
| Material | Neodymium |
| Material Type | Neodymium |
| Model Number | NB035-AD-1 |
| Number of Pieces | 1 |
| Part Number | NB035-45NM |
| Product Dimensions | 3"L x 0.5"W x 0.25"Th |
| Pull Force | 33 pounds |
| Shape | Rectangular |
| UPC | 819060014670 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** CMS MAGNETICS
- **Color:** Silver
- **Material:** Neodymium
- **Product Dimensions:** 3"L x 0.5"W x 0.25"Th
- **Shape:** Rectangular

## Images

![(1-Piece) Grade N45 3x1/2x1/4 Neodymium Bar Magnet with 3M Foam Adhesive | Strong, Rectangle, Triple-Layer Coating, Rare Earth | Crafting, School Project, DYI, Science, Research - Image 1](https://m.media-amazon.com/images/I/61Ov+hJQupL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Strength to size ratio
*by D***N on April 29, 2020*

I'm a wet shaver and I often have 1/2 of a double edged razor blade sitting around. I bought this so I wouldn't set a razor blade where it will get lost and/or eventually found by accident along with cutting a finger. When I break a blade I store the unused half in its wrapper and attach it to the magnet. This magnet is perfect. The blades won't move. I have to slide them off. It doesn't work to pull them directly or it will bend the blade. It's very small so it fits on my shaving shelf and very strong so it holds the blade until I'm ready to slide it off and use it. The magnet big enough it won't easily get lost. One word of warning. I had one of these magnets and I let it get too close to another magnet. They slammed together and broke. Just be aware of how hard this will slam into something magnetic or worse yet, another magnet. I actually think you could get a nasty pinch.

### ⭐⭐⭐⭐⭐ Works for my weird scenario
*by S***T on October 1, 2016*

Very powerful, I mean once you get it attached to something, it will be VERY HARD to get it off. I had to use a hammer to get it off! This is one strong magnet. I use it for a weird purpose: as part of trying to install a running board on my SUV, I dropped one of the holding bolts into a part of undercarriage that is SEALED - so there is no way to retrieve that bolt! After suffering weeks of rattling bolt every time I accelerate and decelerate, I went NUTS. I had to do something about it, it was driving me crazy. Tried a bunch of different things to retrieve the bolt, but without cutting thru metal on my expensive SUV, there seemed no way. Then finally it hit me! I could buy a strong magnet and fish out the bolt closer to the tiny entrance [thru which it fell in the first place]. But that proved very hard too (because the undercarriage is also made of magnetic material - aka iron :). So I decided to leave the magnet in hopes that that would hold the bolt in place. That finally helped - once the bolt rolled itself into position (that took a week of rough driving, lol), the magnet did its job and held the bolt in place - the rattle is finally gone! I might buy a few more of these and put them a few inches apart to keep the bolt from ever escaping the death grip of magnetism!

### ⭐⭐⭐⭐⭐ Works great for boat trailer surge brakes (Pin)
*by A***C on November 4, 2024*

I bought this to prevent my boat trailer surge brake pin from falling out when launching my boat from a ramp. It works perfectly for that application. Prior to getting this the pin would fall out and I would have to keep the trailer electrical connection plugged into the tow vehicle in order to back the trailer into the water- not ideal. Simple solution to that problem. Very strong magnet.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-08-29*