--- product_id: 391145495 title: "MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker" brand: "min ci" price: "₨746" currency: SCR in_stock: true reviews_count: 13 category: "Min Ci" url: https://www.desertcart.sc/products/391145495-min-ci-30-pcs-super-strong-rare-earth-magnets-20 store_origin: SC region: Seychelles --- # 20mm diameter x 3mm thickness precision size 30 pcs ultra-strong neodymium magnets 3-layer electroplated durable finish MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker **Brand:** min ci **Price:** ₨746 **Availability:** ✅ In Stock ## Summary > 🧲 Elevate your space with magnetic power that sticks—and style that lasts! ## Quick Answers - **What is this?** MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker by min ci - **How much does it cost?** ₨746 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/391145495-min-ci-30-pcs-super-strong-rare-earth-magnets-20) ## 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 - • **Bulk Pack Convenience:** 30 magnets per pack means you’re always ready to organize, display, or create—never run out mid-project. - • **Precision Crafted Size:** Perfectly sized at 20 x 3 mm to fit seamlessly on whiteboards, fridges, lockers, and craft projects alike. - • **Versatile Everyday Use:** From office boards to creative crafts, these magnets adapt effortlessly to your lifestyle and workspace needs. - • **Durability Meets Design:** Triple-layer electroplating ensures a sleek silver finish that resists corrosion and wear, keeping your magnets looking sharp. - • **Powerful Neodymium Strength:** Experience unmatched magnetic force that holds your projects firmly in place—no slipping, no sliding. ## Overview The MIN CI 30 Pcs Super Strong Rare Earth Magnets are precision-engineered neodymium magnets measuring 20mm in diameter and 3mm thick. Featuring a durable three-layer electroplated silver finish, these 30-pack round magnets deliver exceptional holding power for a variety of uses including crafts, whiteboards, lockers, and fridge displays. Trusted by thousands with a 4.5-star rating, they combine strength, style, and versatility for professional and creative environments. ## Description MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker: 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: Strongest Magnets Ever - The strongest magnets ever. Purchased these after some other magnets did not hold up to the ceramic pieces I glued to them. These were the solution and I'll never need another! ## 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 20 mm thickness 3 mm, Production batches vary, Variations in size less than or greater than 0.4 mm ( 0.015 in ) exist - 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 | B09LCF4BT7 | | Best Sellers Rank | #6,894 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #79 in Rare Earth Magnets | | Brand | MIN CI | | Brand Name | MIN CI | | Color | Silver | | Customer Reviews | 4.5 out of 5 stars 2,635 Reviews | | Included Components | NeodymiumMagnets | | Item Dimensions L x W x Thickness | 0.78"L x 0.78"W x 0.12"Th | | Item Thickness | 0.12 inches | | Manufacturer | MIN CI | | Material | Round | | Material Type | Round | | Number of Items | 30 | | Number of Pieces | 30 | | Part Number | round Magnets1012151820 | | Product Dimensions | 0.78"L x 0.78"W x 0.12"Th | | Shape | Round | | Unit Count | 30 Count | ## Product Details - **Brand:** MIN CI - **Color:** Silver - **Material:** Round - **Product Dimensions:** 0.78"L x 0.78"W x 0.12"Th - **Shape:** Round ## Images ![MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker - Image 1](https://m.media-amazon.com/images/I/71dODPRCvhL.jpg) ![MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker - Image 2](https://m.media-amazon.com/images/I/61IA80K80TL.jpg) ![MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker - Image 3](https://m.media-amazon.com/images/I/81ztfd7FGIL.jpg) ![MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker - Image 4](https://m.media-amazon.com/images/I/71DO+P80AcL.jpg) ![MIN CI 30 Pcs Super Strong Rare Earth Magnets, 20 x 3 mm Decorative Round Silver Neodymium Fridge Magnets, Multifunctional for Crafts, Whiteboard, Locker - Image 5](https://m.media-amazon.com/images/I/71rop1c-9cL.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. ### ⭐⭐⭐⭐⭐ Strongest Magnets Ever *by C***D on September 5, 2026* The strongest magnets ever. Purchased these after some other magnets did not hold up to the ceramic pieces I glued to them. These were the solution and I'll never need another! ### ⭐⭐⭐⭐⭐ Super Strong 🧲 Magnets! *by V***D on April 7, 2023* I've purchased "neodymium" magent in the past and have been very unsatisfied! Not actually the materials as described. These are The Real Things"! Real Neodymium "coin" magnets. I use them for various applications: I fly a flag 9n my porch railing, a few of these placed on the bottom corner keeps the flag from flapping out of control into my vines and structure which causes damages. One Very Important Point: please, PLEASE take care when placing these very strong magnets into a box or container... they Are Very Strong, if left to "attract" against another or other metal/ stone/ gard, durable material -- THEY CAN SHATTER! NEVER EVER place one on one side of your body with another onto opposing side! NEVER leave in a small child or unresponsable person, they ARE NOT TOYS ON THEIR OWN! If they suddenly slam into each other they can shatter, leaving sharp pieces, causing injury! We Don't want/ need that! I'll also be using these to attach various items onto my steel refrigerator doors for quick, easy access. Again: Not A Toy! ## Frequently Bought Together - MIN CI 30 Pcs Super Strong Rare Earth Magnets Disc, 20 x 3 mm Decorative Round Fridge Neodymium Magnets, Fun Small Refrigerator Magnet for Whiteboard, Cute Locker Magnets, for Crafts Dry Erase Board - 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 Rare Earth Neodymium Magnets, Heavy Duty Bar Magnets with Double-Sided Adhesive, Powerful Pull Force, Perfect for Fridge, Garage, Kitchen, Science, Craft, Office, DIY 60x10x3mm 6pack --- ## 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.sc/products/391145495-min-ci-30-pcs-super-strong-rare-earth-magnets-20](https://www.desertcart.sc/products/391145495-min-ci-30-pcs-super-strong-rare-earth-magnets-20) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-10-08*