--- product_id: 463337016 title: "4 Pack Strong Magnet, 30 x 3mm 8KG Pull Super Strong Neodymium Disc Magnets" brand: "grtard" price: "¥3875" currency: JPY in_stock: true reviews_count: 13 category: "Grtard" url: https://www.desertcart.jp/products/463337016-4-pack-strong-magnet-30-x-3mm-8kg-pull-super store_origin: JP region: Japan --- # Ni-Cu-Ni corrosion-resistant coating 30x3mm compact size 8KG pull force 4 Pack Strong Magnet, 30 x 3mm 8KG Pull Super Strong Neodymium Disc Magnets **Brand:** grtard **Price:** ¥3875 **Availability:** ✅ In Stock ## Summary > 🧲 Small Magnets, Massive Impact – Don’t Miss Out on the Power! ## Quick Answers - **What is this?** 4 Pack Strong Magnet, 30 x 3mm 8KG Pull Super Strong Neodymium Disc Magnets by grtard - **How much does it cost?** ¥3875 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/463337016-4-pack-strong-magnet-30-x-3mm-8kg-pull-super) ## Best For - grtard enthusiasts ## Why This Product - Trusted grtard brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Mighty:** 30mm diameter and 3mm thickness fit seamlessly into any DIY setup. - • **Sleek & Durable Finish:** Premium Ni-Cu-Ni coating resists rust and scratches for lasting shine. - • **Versatile Everyday Use:** Perfect for crafts, home organization, science experiments, and more. - • **Safety First, Power Always:** Strong rare earth magnets designed for responsible adult use (15+). - • **Unmatched Magnetic Strength:** 8KG pull force powers through any project with ease. ## Overview This 4-pack of premium neodymium disc magnets delivers an impressive 8KG pull force in a sleek 30x3mm size. Coated with corrosion-resistant Ni-Cu-Ni, these magnets combine durability with a polished silver finish. Ideal for professionals and creatives alike, they excel in crafts, DIY projects, and organizational tasks, offering powerful, reliable magnetic performance in a compact form. ## Description Product Description Why Magnets Break Easily? Rare Earth Magnets - Strong Holding Power These high-powered disc magnets are incredibly strong and commonly used in DIY, crafts, furniture design, fixings, kitchen design, sale display units, scale models, lock mechanisms, science experiments, computing and many more. Misconception It’s easy to assume that these magnets should be as strong as steel, Unfortunately, that assumption couldn’t be further from the truth. Many common metals are fairly ductile. If the material is ductile, that means you can bend or reshape it before it breaks. Steel or aluminum are ductile metals. Neodymium magnets are more like ceramic than a piece of steel. So it breaks more easily! Review: Little magnets with big attraction!! - Solid little magnets with big power! The adjective tape fixes to one part (in my case, a metal sign - which also would have been just as effective without the adhesive tape as it was attaching to metal) and the other to hidden screws so the sign could be attached and removed easily. Very easy to install (although they are so powerful you have to keep them well apart until ready!) and they are nice and thin at 3mm. Great value for money and very versatile! Review: So strong. - Super strong little magnets. I use them for keeping tarpaulin stretched over open rear doors in ducato van. 4 of these magnets hold it in place in wind and rain. Excellent. ## Features - ⭐【MAGNETS COATED】 - You will love the smooth and shiny finish. Our magnets are protected with a corrosion-resistant Ni-Cu-Ni (Nickel-Copper-Nickel) coating to create a high-quality silver look that doesn't rust or scratch. - ⭐【STRONG MAGNETS】 - Amazing strong! Made from the world's strongest magnetic element, our pure neodymium disc magnets are incredibly powerful. This set of premium rare earth magnets can handle your project or task. - ⭐【UNLIMITED USES】 - These neodymium disc magnets work great as strong refrigerator magnets, for arts and crafts, DIY projects, hanging spice jars, pictures, whiteboards, tools in the garage, or science classroom at school, etc. - ⭐【PORTABLE SIZE】 - Rare earth magnets have dimensions of 1.18 inches in diameter and 0.12 inches.Various packs can satisfy your various choices. - ⭐【WARNING: AGE 15+ ONLY】- Contains strong magnets. Hazardous if swallowed or placed near medical devices. Keep out of reach of all children under 15 years of age. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B3X4TFHS | | Best Sellers Rank | 94 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 1 in Rare Earth Magnets | | Brand | Grtard | | Colour | Silver | | Country Of Origin | China | | Customer Reviews | 4.3 out of 5 stars 2,851 Reviews | | Item Dimensions L x W x Thickness | 30L x 30W x 3Th millimetres | | Item Shape | Round | | Item Thickness | 3 Millimetres | | Item thickness | 3 Millimetres | | Manufacturer | Grtard | | Material | Neodymium | | Material Type | Neodymium | | Number of Pieces | 4 | | Product dimensions | 30L x 30W x 3Th millimetres | | Pull Force | 8 Kilograms | | Shape | Round | | Unit Count | 4.0 count | ## Product Details - **Brand:** Grtard - **Colour:** Silver - **Material:** Neodymium - **Product dimensions:** 30L x 30W x 3Th millimetres - **Shape:** Round ## Images ![4 Pack Strong Magnet, 30 x 3mm 8KG Pull Super Strong Neodymium Disc Magnets - Image 1](https://m.media-amazon.com/images/I/71XQhiwp-iL.jpg) ![4 Pack Strong Magnet, 30 x 3mm 8KG Pull Super Strong Neodymium Disc Magnets - Image 2](https://m.media-amazon.com/images/I/81eeYW77YFL.jpg) ![4 Pack Strong Magnet, 30 x 3mm 8KG Pull Super Strong Neodymium Disc Magnets - Image 3](https://m.media-amazon.com/images/I/716LIjoqT3L.jpg) ![4 Pack Strong Magnet, 30 x 3mm 8KG Pull Super Strong Neodymium Disc Magnets - Image 4](https://m.media-amazon.com/images/I/715n35xFelL.jpg) ![4 Pack Strong Magnet, 30 x 3mm 8KG Pull Super Strong Neodymium Disc Magnets - Image 5](https://m.media-amazon.com/images/I/71hrR2jJ7SL.jpg) ## Available Options This product comes in different **Size, Number Of Items** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Little magnets with big attraction!! *by G***O on 22 June 2026* Solid little magnets with big power! The adjective tape fixes to one part (in my case, a metal sign - which also would have been just as effective without the adhesive tape as it was attaching to metal) and the other to hidden screws so the sign could be attached and removed easily. Very easy to install (although they are so powerful you have to keep them well apart until ready!) and they are nice and thin at 3mm. Great value for money and very versatile! ### ⭐⭐⭐⭐⭐ So strong. *by S***D on 24 July 2026* Super strong little magnets. I use them for keeping tarpaulin stretched over open rear doors in ducato van. 4 of these magnets hold it in place in wind and rain. Excellent. ### ⭐⭐⭐⭐ Do the job but very fragile *by J***N on 13 July 2026* They do the job but you have to treat them gently because they break up --- ## 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.jp/products/463337016-4-pack-strong-magnet-30-x-3mm-8kg-pull-super](https://www.desertcart.jp/products/463337016-4-pack-strong-magnet-30-x-3mm-8kg-pull-super) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-12*