---
product_id: 379444468
title: "Block Ferrite"
brand: "by jmy"
price: "174 zł"
currency: PLN
in_stock: true
reviews_count: 8
url: https://www.desertcart.pl/products/379444468-block-ferrite
store_origin: PL
region: Poland
---

# Rust-proof in fresh & salt water 3850 Gauss magnetic strength 29 lbs holding force Block Ferrite

**Brand:** by jmy
**Price:** 174 zł
**Availability:** ✅ In Stock

## Summary

> 🧲 Elevate your projects with magnetic power that sticks—and lasts!

## Quick Answers

- **What is this?** Block Ferrite by by jmy
- **How much does it cost?** 174 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/379444468-block-ferrite)

## Best For

- by jmy enthusiasts

## Why This Product

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

## Key Features

- • **Heavy-Duty Holding Power:** Supports up to 29 lbs—perfect for demanding projects
- • **Rust-Resistant Durability:** Built to withstand fresh and saltwater environments without corrosion
- • **Powerful Grade 8 Ceramic Magnets:** Unleash 3850 Gauss of magnetic force for serious hold
- • **Budget-Friendly Magnetic Solution:** Get premium strength at a fraction of rare earth magnet costs
- • **Versatile for Creativity & Science:** Ideal for crafts, STEM projects, and DIY innovations

## Overview

These Grade 8 ferrite ceramic magnets deliver a strong 3850 Gauss magnetic field and 29 pounds of holding force, making them ideal for crafts, science experiments, and hobby projects. Their rust-proof design ensures durability in both fresh and saltwater environments, all at an economical price point compared to rare earth magnets. Perfect for professionals and makers seeking reliable, long-lasting magnetic solutions.

## Description

Sponsored Ad - Ferrite Blocks Ceramic Magnets 1 7/8" x 7/8" x 3/8" Rectangular Magnets, Grade 8 - for Crafts, Science and Hobbies - 12 Pieces

## Features

- 【POWERFUL】 Grade 8 ceramic magnet material with 3,850 Gaussian internal. Each piece can provide 29 pounds of holding force under ideal conditions.
- 【ECONOMICAL】This ceramic magnet is an economical choice for magnets. Only a small part of the cost of a rare earth magnet of similar size.
- 【DURABLE】They will not rust in any environment. Suitable for fresh water or salt water. Magnetism will always continue normal use.
- 【APPLICATION SCOPE】Science education in schools, children's science projects, namely suspended trains, hand-made at home, light work in the backyard or garage, etc.
- 【BUY WITH COMPLETE CONFIDENCE】If you are not satisfied with the magnet for any reason, we will provide a 30-day no-guaranteed money-back guarantee.

## Product Details

- **Material:** Ceramic
- **Brand:** BY JMY
- **Product Dimensions:** 1.89"L x 0.87"W x 0.39"Th
- **Color:** Black
- **Shape:** Rectangular

## Images

![Block Ferrite - Image 1](https://m.media-amazon.com/images/I/71-xC4uT1sL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Effective
*by D***T on May 3, 2025*

I have a vintage stove with a door that had a broken spring and wouldn’t stay open. I used these magnets to keep the door closed and they work great! I’m so pleased that I didn’t have to do anything to interfere with the integrity of the stove. The magnets are strong but not so strong that the door is hard to open. They’re perfect!

### ⭐⭐⭐⭐⭐ magnets that really work
*by M***Y on March 18, 2025*

These are fantastic for handing note pads, cards, pens, all kinds of stuff on any metal surface. Bought one set, and then another. They support a lot of weight.

### ⭐⭐⭐⭐⭐ If you wear metal braces on your teeth.
*by H***S on February 2, 2025*

Magnets will “fly” from across the room. Excellent product! My single burner camping stove requires 8.8 ounce bottle of butane. (Metal bottle is size of shaving cream container.). Bottle is securely placed inside stove, but door is not latched.). Magnets keep door tight and secure. Did I say strong. Great value for money.

## Frequently Bought Together

- BY JMY Ferrite Blocks Ceramic Magnets 1 7/8" x 7/8" x 3/8" Rectangular Magnets, Grade 8 - for Crafts, Science and Hobbies - 12 Pieces
- BNTECHGO 30 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0098" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors
- BNTECHGO 28 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 1.0 lb - 0.0122" Diameter 1 Spool Coil Natural Temperature Rating 155℃ Widely Used for Transformers Inductors

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**Shop now:** [https://www.desertcart.pl/products/379444468-block-ferrite](https://www.desertcart.pl/products/379444468-block-ferrite)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-04-24*