--- product_id: 404813603 title: "MIN CI 40 Pcs Super Strong Neodymium Round Silver Magnets, 18 mm x 3 mm for Dry Erase Board, Fridge, Crafts & More" brand: "min ci" price: "VT8807" currency: VUV in_stock: true reviews_count: 13 category: "Min Ci" url: https://www.desertcart.vu/products/404813603-min-ci-40-pcs-super-strong-neodymium-round-silver-magnets store_origin: VU region: Vanuatu --- # Super strong neodymium pull 18mm diameter x 3mm thick Triple-layer electroplated durability MIN CI 40 Pcs Super Strong Neodymium Round Silver Magnets, 18 mm x 3 mm for Dry Erase Board, Fridge, Crafts & More **Brand:** min ci **Price:** VT8807 **Availability:** ✅ In Stock ## Summary > 🧲 Elevate your projects with magnets that mean business! ## Quick Answers - **What is this?** MIN CI 40 Pcs Super Strong Neodymium Round Silver Magnets, 18 mm x 3 mm for Dry Erase Board, Fridge, Crafts & More by min ci - **How much does it cost?** VT8807 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/404813603-min-ci-40-pcs-super-strong-neodymium-round-silver-magnets) ## Best For - min ci enthusiasts ## Why This Product - Trusted min ci brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Premium Bulk Pack:** 40-piece set offers unbeatable value for professionals and hobbyists alike. - • **Customizable Sizes:** Choose from a variety of sizes or request custom dimensions to perfectly fit your project needs. - • **Powerful Magnetic Grip:** Experience industrial-grade strength that holds tight without slipping or losing grip. - • **Versatile Everyday Use:** Ideal for office boards, fridge magnets, crafts, jewelry, and creative DIY projects. - • **Durability Meets Design:** Triple-layer electroplating ensures a sleek silver finish that resists corrosion and wear. ## Overview The MIN CI Nedoymium Magnet set features 40 super strong neodymium disc magnets, each measuring 18mm in diameter and 3mm thick. Engineered with triple-layer electroplating for enhanced durability and corrosion resistance, these versatile magnets deliver industrial-strength pull perfect for office, home, and creative applications. Available in multiple sizes with custom options, they combine premium quality with exceptional value. ## Description MIN CI 40 Pcs Super Strong Neodymium Round Silver Magnets, 18 mm x 3 mm for Dry Erase Board, Fridge, Crafts & More: desertcart.com: Industrial & Scientific Review: Nice and strong, feel like maybe N42 - I have worked with quite a few ultra-powerful neodymium magnets in the past 3 years, some of which are outright dangerous if handled recklessly, such as strong enough to crush fingers that get in the way, or outright lift refrigerators and small steel engine blocks. This is not one of those kind of magnets, but I still treat all neodymium permanent magnets with respect for safety. This was the perfect size to replace the anemic weak magnet in the antenna for a cellular network access "fail-over" device, so it would stay put on a vehicle or in a portable application in high winds. The original antenna underwent "sudden violent separation" from a car roof, followed by high velocity contact with the highway surface and dragging by its attached coaxial cable, accompanied by multiple secondary impacts with pavement and the side of the car until the driver was able to come to a stop after about 400 feet. Pieces of debris from the antenna base were recovered from the highway, bagged, and taken home to see if there was any hope of repair; not due to the cost - only a $25 antenna - but the 6 to 8 weeks of supply chain delays to acquire a replacement. Following examination of the debris, it was quickly determined that the tiny magnet used in the base during manufacture was woefully inadequate to hold it to the roof of a vehicle at highway speeds. A small mold was made to replicate the shape of the plastic base, the recovered fragments were placed approximately where they would have been before the accident, the metal parts were verified to still have electrical and RF integrity, and a small amount of resin was poured to reconstruct the base. The steel cup in which the original magnet had been placed, was measured for inside bottom diameter, as was its depth with a machinist's gauge. With sufficient cup clearance calculated to maximize magnetic field strength out of the bottom, these magnets were selected and ordered as the best fit and likelihood of sufficient strength to upgrade the base holding force to an acceptable performance level in the field. While the magnets were en route, the antenna system was tested with a rather expensive microwave antenna and feedline analyzer, and determined to be still functional within the cellular 4G spectrum. The empty cup was filled with JB Weld epoxy (which although it contains steel powder and is slightly magnetic, does not divert more than a few percent of magnetic flux). This was used to "pot" the magnet so when removing the modified rebuilt assembly from a car roof, it will stay firmly attached to the antenna and not the car. 24 hours later once the epoxy had fully cured, the repaired unit was placed on the car roof, with a camera anchored nearby to observe it. The antenna analyzer was connected to the coax, and set up to monitor impedance and reflected energy in the center of the 4G cellular spectrum, and the unit was taken on a test drive. The first leg consisted of about 2 miles of incredibly rough dirt road, which subjected the unit to extreme vibration, which should induce microscopic very fast separation and gap closure over millisecond intervals, which can cause data errors and "chopping" of voice over IP. The magnet was strong enough no significant signal degradation was observed. The second leg was about 4 miles of secondary road at between 35 and 50 mph. The final leg was 10 miles out and 10 miles back of highway between 75 and 80 mph to observe aerodynamic behavior and the magnet's ability to overcome these forces. The magnet passed with flying colors. Most people won't use them for this, but it worked well. I'm going to put another one in a TV remote so it stays put on a steel cabinet when not in use, and the cats can't hide it under furniture. Review: Very strong pull - These magnets have extremely strong pull - they do not have adhesive on one side. They do not come apart easily - I found I needed to push them apart and that was a struggle. Their size is bigger than a nickel and are not quite a quarter inch thick. ## Features - Ours are neodymium strong magnets heavy duty, which have big suction, there are a variety of sizes to meet your needs, support custom sizes - Three-layer electroplating makes the appearance of the magnet more durable, size diameter 18 mm thickness 3 mm - Widely used magnets in your daily life or work, crafting, jewelry, photos, greeting cards displaying, even magnet projects and more - Multifunctional Strong Magnets Push Pin: Can be used as locker magnets, magnets for fridge, calendar, map, kitchen, billboard, dry erase board in home, office - MIN CI is a manufacturer of neodymium magnet, we can provide magnets in different sizes ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09LC4QB9H | | Best Sellers Rank | #2,157 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #34 in Rare Earth Magnets | | Brand Name | MIN CI | | Color | Silver | | Customer Reviews | 4.5 4.5 out of 5 stars (2,468) | | Included Components | Rare Earth Magnets | | Item Dimensions L x W x Thickness | 0.71"L x 0.71"W x 0.12"Th | | Item Thickness | 3 Millimeters | | Manufacturer | MIN CI | | Material Type | Neodymium | | Model Number | round Magnets1012151820 | | Number of Pieces | 40 | | Part Number | round Magnets1012151820 | | Shape | Round | | Unit Count | 40 Count | ## Product Details - **Brand:** MIN CI - **Color:** Silver - **Material:** Neodymium - **Product Dimensions:** 0.71"L x 0.71"W x 0.12"Th - **Shape:** Round ## Images ![MIN CI 40 Pcs Super Strong Neodymium Round Silver Magnets, 18 mm x 3 mm for Dry Erase Board, Fridge, Crafts & More - Image 1](https://m.media-amazon.com/images/I/71unNcAmXaL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Nice and strong, feel like maybe N42 *by J***T on August 1, 2023* I have worked with quite a few ultra-powerful neodymium magnets in the past 3 years, some of which are outright dangerous if handled recklessly, such as strong enough to crush fingers that get in the way, or outright lift refrigerators and small steel engine blocks. This is not one of those kind of magnets, but I still treat all neodymium permanent magnets with respect for safety. This was the perfect size to replace the anemic weak magnet in the antenna for a cellular network access "fail-over" device, so it would stay put on a vehicle or in a portable application in high winds. The original antenna underwent "sudden violent separation" from a car roof, followed by high velocity contact with the highway surface and dragging by its attached coaxial cable, accompanied by multiple secondary impacts with pavement and the side of the car until the driver was able to come to a stop after about 400 feet. Pieces of debris from the antenna base were recovered from the highway, bagged, and taken home to see if there was any hope of repair; not due to the cost - only a $25 antenna - but the 6 to 8 weeks of supply chain delays to acquire a replacement. Following examination of the debris, it was quickly determined that the tiny magnet used in the base during manufacture was woefully inadequate to hold it to the roof of a vehicle at highway speeds. A small mold was made to replicate the shape of the plastic base, the recovered fragments were placed approximately where they would have been before the accident, the metal parts were verified to still have electrical and RF integrity, and a small amount of resin was poured to reconstruct the base. The steel cup in which the original magnet had been placed, was measured for inside bottom diameter, as was its depth with a machinist's gauge. With sufficient cup clearance calculated to maximize magnetic field strength out of the bottom, these magnets were selected and ordered as the best fit and likelihood of sufficient strength to upgrade the base holding force to an acceptable performance level in the field. While the magnets were en route, the antenna system was tested with a rather expensive microwave antenna and feedline analyzer, and determined to be still functional within the cellular 4G spectrum. The empty cup was filled with JB Weld epoxy (which although it contains steel powder and is slightly magnetic, does not divert more than a few percent of magnetic flux). This was used to "pot" the magnet so when removing the modified rebuilt assembly from a car roof, it will stay firmly attached to the antenna and not the car. 24 hours later once the epoxy had fully cured, the repaired unit was placed on the car roof, with a camera anchored nearby to observe it. The antenna analyzer was connected to the coax, and set up to monitor impedance and reflected energy in the center of the 4G cellular spectrum, and the unit was taken on a test drive. The first leg consisted of about 2 miles of incredibly rough dirt road, which subjected the unit to extreme vibration, which should induce microscopic very fast separation and gap closure over millisecond intervals, which can cause data errors and "chopping" of voice over IP. The magnet was strong enough no significant signal degradation was observed. The second leg was about 4 miles of secondary road at between 35 and 50 mph. The final leg was 10 miles out and 10 miles back of highway between 75 and 80 mph to observe aerodynamic behavior and the magnet's ability to overcome these forces. The magnet passed with flying colors. Most people won't use them for this, but it worked well. I'm going to put another one in a TV remote so it stays put on a steel cabinet when not in use, and the cats can't hide it under furniture. ### ⭐⭐⭐⭐⭐ Very strong pull *by B***P on January 27, 2026* These magnets have extremely strong pull - they do not have adhesive on one side. They do not come apart easily - I found I needed to push them apart and that was a struggle. Their size is bigger than a nickel and are not quite a quarter inch thick. ### ⭐⭐⭐⭐⭐ Perfect for fridge magnets. *by C***E on January 20, 2026* Purchased these to make some fridge magnets. They were packaged well enough that no magnets were damaged. (Magnets can be brittle.) These are on the small side, but they are mighty! I was surprised how strong these were. I definitely recommend these if you need this size magnet. Good value. Worked perfectly for my fridge magnets. ## Frequently Bought Together - MIN CI 40 Pcs Super Strong Neodymium Round Silver Magnets, 18 mm x 3 mm for Dry Erase Board, Fridge, Crafts & More - MIN CI 100 Pcs Strong Round Small Rare Earth Magnets, Mini Refrigerator Neodymium Magnets Disc for Whiteboard Locker Fridge Crafts Dry Erase Board Cabinets - MIKEDE Strong Neodymium Bar Magnets, 16 Pack Black Heavy Duty Magnets with Double-Sided Adhesive, Rare Earth Metal Rectangular Magnetic Bar Magnet for Kitchen, DIY, Tool Storage - 60 x 10 x 3 mm --- ## 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.vu/products/404813603-min-ci-40-pcs-super-strong-neodymium-round-silver-magnets](https://www.desertcart.vu/products/404813603-min-ci-40-pcs-super-strong-neodymium-round-silver-magnets) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-05*