--- product_id: 13431347 title: "Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole" brand: "aomag" price: "S/.29" currency: PEN in_stock: false reviews_count: 13 url: https://www.desertcart.pe/products/13431347-ferrite-ring-magnet-4in-dia-big-round-circle-ceramic-magnets store_origin: PE region: Peru --- # 100mm outer diameter, 20mm thick 120 lbs pull force High corrosion & demagnetization resistance Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole **Brand:** aomag **Price:** S/.29 **Availability:** ❌ Out of Stock ## Summary > 🧲 Elevate your magnetic game with power, precision, and unbeatable value! ## Quick Answers - **What is this?** Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole by aomag - **How much does it cost?** S/.29 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/13431347-ferrite-ring-magnet-4in-dia-big-round-circle-ceramic-magnets) ## Best For - aomag enthusiasts ## Why This Product - Trusted aomag brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Powerhouse:** Perfect for DIY, industrial, educational, and creative uses—your all-in-one magnetic solution. - • **Smart Investment Magnet:** Premium ceramic strength at a fraction of rare-earth magnet prices—value meets performance. - • **Unmatched Magnetic Grip:** 120 lbs of reliable pull force keeps your projects locked in place. - • **Built to Brave the Elements:** Corrosion and demagnetization resistant for long-lasting performance in any environment. - • **Precision Crafted for Safety:** Smooth, rounded edges from advanced molding ensure safe handling and durability. ## Overview The AOMAG Ferrite Ring Magnet is a 4-inch diameter, 20mm thick ceramic magnet featuring a 60mm inner hole. With a strong 120-pound pull force and exceptional resistance to corrosion and demagnetization, it’s engineered for durability and versatility across industrial, educational, and creative applications. Its smooth molded edges ensure safe handling, making it a cost-effective, high-performance choice for professionals and hobbyists alike. ## Description Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole | Strong Large Donut Circular Magnetic Ring Heavy Duty for DIY, Crafts Speaker Creative Hobbies Science: Lift Magnets: desertcart.com: Industrial & Scientific Review: Got what I wanted. Thanks. - Got what I wanted. Thanks. Review: They are strong! - This is a project peace ## Features - 【Strong Magnetic Performance】Ferrite Ring Magnets Large Round Magnet with Holes. Size - OD: 100mm(3.95"), ID: 60mm(2.36"), Thickness: 20mm(0.79"). With Grade 10 magnetic strength, these large magnets provide robust magnetic adhesion, ensuring they stay firmly attached to any metal surface without slipping. - 【Strength & Durability】Large Ring Ferrite circle magnets with Hole has high demagnetization resistance, corrosion resistance and oxidation resistance. High-quality materials determine the quality of magnets. The Round Circle Magnets are highly resistant to demagnetization, corrosion, making them suitable for use in challenging environments without the need for additional protective coatings. - 【Efficient Storage Solution】 - Use the large ring magnets to organize and secure metal tools and other items, saving space and reducing clutter in your workspace.Round Ceramic magnets made by molding process have more rounded edges than those cut by cutting, and are made of rare earth permanent magnetic materials mixed with other metal materials. - 【Multiple Uses】These Big round magnets are widely used as classroom magnets, refrigerator magnets, industrial magnets, whiteboard magnets, motors and generators, sensors, speaker magnets, scientific magnets and DIY magnets.With the ability to meet the needs of all your magnetic projects, the magnetic ring will be a reliable tool in your daily life. - 【ECONOMICAL】Compared with NdFeB magnets, this large ring ferrite magnets have no advantages in magnetic force, but magnets of the same size (compared with NdFeB magnets) sell for only a small part. The round circle magnets with hole will be packed by original AOMAG trademark package. Powered by AOMAG Only! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007OXE3LI | | Best Sellers Rank | #49,095 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #28 in Industrial Ceramic Magnets | | Brand | AOMAG | | Brand Name | AOMAG | | Color | Dark Grey | | Customer Reviews | 4.5 out of 5 stars 792 Reviews | | Item Dimensions L x W x Thickness | 3.93"L x 3.93"W x 0.78"Th | | Item Highlight | Strong Large Donut Circular Magnetic Ring Heavy Duty for DIY, Crafts Speaker Creative Hobbies Science | | Item Thickness | 20 millimeters | | Item Weight | 1.1 pounds | | Manufacturer | AOMAG | | Material | Ceramic | | Material Type | Ceramic | | Model Number | 7-303578JFA | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Part Number | 7-303578JFA | | Product Dimensions | 3.93"L x 3.93"W x 0.78"Th | | Pull Force | 120 pounds | | Shape | Round | | Unit Count | 1 Count | ## Product Details - **Brand:** AOMAG - **Color:** Dark Grey - **Material:** Ceramic - **Product Dimensions:** 3.93"L x 3.93"W x 0.78"Th - **Shape:** Round ## Images ![Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole - Image 1](https://m.media-amazon.com/images/I/71tdrsjcqEL.jpg) ![Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole - Image 2](https://m.media-amazon.com/images/I/71F6CGFqkZL.jpg) ![Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole - Image 3](https://m.media-amazon.com/images/I/61D22mAWZpL.jpg) ![Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole - Image 4](https://m.media-amazon.com/images/I/81DAPXTktBL.jpg) ![Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole - Image 5](https://m.media-amazon.com/images/I/81Y218XjBaL.jpg) ## Questions & Answers **Q: what is the lifting capacity of this magnet?** A: I’m my experience between 325 - 370g. **Q: what is the equivalent pull force?** A: This magnet can pick up about 100 paper clips **Q: What is the diameter of the inner hole?** A: 2-1/4" ID **Q: how many gauss?** A: wasn't posted on the box ## Customer Reviews ### ⭐⭐⭐⭐⭐ Got what I wanted. Thanks. *by G***S on August 23, 2025* Got what I wanted. Thanks. ### ⭐⭐⭐⭐⭐ They are strong! *by V***L on April 21, 2026* This is a project peace ### ⭐⭐⭐⭐ 🧲 *by S***I on January 15, 2026* Not as strong as thought to be yet holds small metal screws & such ## Frequently Bought Together - Ferrite Ring Magnet, 4In Dia, Big Round Circle Ceramic Magnets with Hole, Strong Large Donut Circular Magnetic Ring Heavy Duty for DIY, Crafts Speaker Creative Hobbies Science - Legrand Pass & Seymour S752WCC10 660W 250V Medium Base A26 Lampholder, Cleat Sockets, Front Wire, White (1 Count) - Hillman 25' 18 Gauge Bare Copper Wire --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/13431347-ferrite-ring-magnet-4in-dia-big-round-circle-ceramic-magnets](https://www.desertcart.pe/products/13431347-ferrite-ring-magnet-4in-dia-big-round-circle-ceramic-magnets) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-09-04*