---
product_id: 134896647
title: "MagFlex 300mm [11.8\"] Wide Flexible Magnetic Sheet, 3M Self Adhesive, 1M [39\"] Length"
brand: "first4magnets"
price: "¥13515"
currency: JPY
in_stock: true
reviews_count: 5
category: "First4 Magnets"
url: https://www.desertcart.jp/products/134896647-magflex-300mm-11-8-wide-flexible-magnetic-sheet-3m-self
store_origin: JP
region: Japan
---

# 300mm wide for versatile coverage 40g/cm² magnetic pull strength 3M super-strong self-adhesive backing MagFlex 300mm [11.8"] Wide Flexible Magnetic Sheet, 3M Self Adhesive, 1M [39"] Length

**Brand:** first4magnets
**Price:** ¥13515
**Availability:** ✅ In Stock

## Summary

> 🧲 Stick, Flex, Create — Magnetism Meets Mastery!

## Quick Answers

- **What is this?** MagFlex 300mm [11.8"] Wide Flexible Magnetic Sheet, 3M Self Adhesive, 1M [39"] Length by first4magnets
- **How much does it cost?** ¥13515 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/134896647-magflex-300mm-11-8-wide-flexible-magnetic-sheet-3m-self)

## Best For

- first4magnets enthusiasts

## Why This Product

- Trusted first4magnets brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible 300mm Width:** Generous size for large-scale creative projects or signage
- • **Safe & User-Friendly:** Non-toxic EN71 certified rubber material, perfect for professional and hobbyist use
- • **Powerful Magnetic Grip:** Striped north-south magnetic field ensures secure hold on metal surfaces
- • **Cut-to-Size Convenience:** Easily trimmed with scissors for custom shapes and applications
- • **3M Self-Adhesive Backing:** Instant stick with long-lasting bond that strengthens over 24-32 hours

## Overview

The MagFlex 300mm wide flexible magnetic sheet offers a 1-meter length of durable, rubber-based magnetic material with a strong 40g/cm² pull force. Featuring a striped north-south magnetic field on one side and a premium 3M self-adhesive on the other, it delivers a secure grip and easy application. Perfect for crafts, signage, and custom magnetic projects, this non-toxic, flexible sheet can be cut to any size, making it an essential tool for creative professionals and managers who demand both functionality and style.

## Description

Supplied as one 1 meter [39. 37"] length. 300mm [11. 8"] wide x 0. 85mm [0. 03"] thick and 1 meter [39. 37"] long. Magnetic on one side only with a striped north-south magnetic field to give a secure grip. Convenient super-strong self-adhesive on the non-magnetic side. Each MagFlex magnetic sheet has a pulling force of 40g/cm squared [0. 56 lb/in squared]. Made from non-toxic, EN71 material. Because our self-adhesive, flexible magnetic sheets are easily cut to size with scissors it makes their creative uses endless. Whether you are a craft enthusiast, want to create your own signs or make your artwork or photos magnetic you will find our MagFlex magnetic sheets really useful. Because they are much less powerful than 'hard' Neodymium magnets they are much easier to handle and work with. These MagFlex sheets utilize a firm acrylic pressure-sensitive adhesive that substantially increases in bond strength with natural aging. While the initial touch bond strength is enough to keep the grip secure, to ensure the adhesive can withstand the pull strength we recommend allowing between 24 to 32 hours for the adhesive to fully cure. PLEASE NOTE – All imperial measurements [Inches (“) and Pounds (lb)] are rounded conversions from metric [Millimeters (mm) and Kilograms (kg)] production measurements and should be used as approximations only.

Review: Explosive proof! - It's a big sheet of strong, flexible magnetic sheet. Hold a 10cm x 20cm on van at 70mph, to give you an idea. (Explosive sign so needs to be removable)
Review: DON’t falsely advertise. You should ship what was purchased. - Add says 1m long but it was 60cm. Too short. Pissed about that.

## Features

- Supplied as one 1 meter [39. 37"] length.
- 300mm [11. 8"] wide x 0. 85mm [0. 03"] thick and 1 meter [39. 37"] long.
- Magnetic on one side only with a striped north-south magnetic field to give a secure grip.
- Convenient super-strong self-adhesive on the non-magnetic side.
- Each MagFlex magnetic sheet has a pulling force of 40g/cm2 [0. 56 lb/in2].

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00FL0G5OE |
| Adhesive Format | sheet |
| Adhesive Location | non_magnetic_side |
| Adhesive Side Count | 1 |
| Best Sellers Rank | #1,995,565 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3,112 in Rare Earth Magnets |
| Brand | FIRST4MAGNETS |
| Brand Name | FIRST4MAGNETS |
| Color | Gray |
| Compatible Material | Metal |
| Customer Reviews | 4.0 out of 5 stars 371 Reviews |
| Foil Thickness | 0.85 Millimeters |
| Global Trade Identification Number | 05055641210948 |
| Included Components | Magnets |
| Item Dimensions L x W x Thickness | 11.81"W x 0.03"Th |
| Item Resistance | not_water_resistant |
| Item Thickness | 0.85 Millimeters |
| Manufacturer | Magnet Expert |
| Material | Rubber |
| Material Type | Rubber |
| Model | FS300A-1 |
| Number of Items | 1 |
| Other Special Features of the Product | Magnetic |
| Part Number | MF300(3M)-1X1M |
| Recommended Uses For Product | Arts And Craft |
| Size Name | 300mm x 0.85mm |
| Special Feature | Magnetic |
| Surface Recommendation | Metal |
| Tensile Strength | 0.56 Pounds Per Square Inch |
| Unit Count | 1 Count |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** FIRST4MAGNETS
- **Color:** Gray
- **Material:** Rubber
- **Number of Items:** 1
- **Recommended Uses For Product:** Arts And Craft

## Images

![MagFlex 300mm [11.8"] Wide Flexible Magnetic Sheet, 3M Self Adhesive, 1M [39"] Length - Image 1](https://m.media-amazon.com/images/I/31Cx-AefiML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Explosive proof!
*by J***N on August 14, 2017*

It's a big sheet of strong, flexible magnetic sheet. Hold a 10cm x 20cm on van at 70mph, to give you an idea. (Explosive sign so needs to be removable)

### ⭐ DON’t falsely advertise. You should ship what was purchased.
*by F***R on September 15, 2019*

Add says 1m long but it was 60cm. Too short. Pissed about that.

### ⭐ Product niet aangekomen
*by A***A on July 22, 2020*

Vorige week besteld met prime. Idee was om het snel in huis te hebben. Ik zie dat het pakketje er nu nog steeds niet is. Alleen het label is aangemaakt en verder gebeurt er niets.

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**Shop now:** [https://www.desertcart.jp/products/134896647-magflex-300mm-11-8-wide-flexible-magnetic-sheet-3m-self](https://www.desertcart.jp/products/134896647-magflex-300mm-11-8-wide-flexible-magnetic-sheet-3m-self)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-14*