DIYMAG 12Pack Strong Neodymium Disc Magnets，Rare Earth Magnets with Double-Sided Adhesive Powerful Heavy Duty Magnets for Fridge DIY Building Scientific Craft and Office, 1.26inch D x 0.12inch H

Great for headrests in the hot tub/spa and making refrigerator magnets. They come with a two sided adhesive pad that is strong. The best use I found with these was fixing the headrests in my new spa. The headrests attach to the spa via magnets which are TOO WEAK. When I had guests in my new spa the water level rose as people entered the spa. The headrests all detached and were floating in the spa. This issue was frustrating until I found these. I placed them between the headrests and the surface of the spa and they totally rectified the issue. You need two magnets for each headrest. They have to be replaced every 4-6 months because they corrode with chlorine or bromine. The corrosion didn't damage the acrylic surface of the spa so this is fine with me. I also use them to create refrigerator magnets as I like and collect them.

The strength was effective the size was good and they were difficult to separate which means that was a good thing. The hold seems everlasting and the magnet strength is awesome thank you!

I’m using these magnets in place of screws! Rather than damage the back of my guitar amp using ugly brackets and screws, I’m using 8 magnets mounted with 3M double sided tape! They work great!! Don’t get your fingers in between them when they are close together.. you could pinch yourself and / or break the magnets. This battery weighs about 2lbs and it stays in place during shows and getting thrown around in the truck and the battery never comes off

Strong magnets. Bought to use for making a cup holder. Didn't end up using them so they are stuck on my tool box for later.

The DIYMAG 12Pack offers a set of neodymium disc magnets that are designed for heavy-duty use across a range of applications—from holding items on your refrigerator to use in DIY projects, scientific experiments, crafts, and office organization. Measuring 1.26 inches in diameter and 0.12 inches in height, these magnets promise impressive strength in a compact size. They come with a double-sided adhesive intended to facilitate easy mounting, making them a popular choice for a variety of creative and practical tasks. Pros • Exceptional Magnetic Strength: Users consistently highlight the powerful holding force of these neodymium magnets. They are capable of supporting significant weight and remain effective for both indoor and light outdoor applications. This makes them ideal for tasks ranging from mounting insulation boards on a fireplace to organizing office supplies. • Versatility: The magnets’ compact size and strong magnetic pull make them suitable for a wide variety of projects. Whether you’re working on craft projects, scientific experiments, or simple household fixes, these magnets offer the flexibility needed to tackle many tasks. • Ease of Installation: With the inclusion of a double-sided adhesive backing, these magnets are designed for quick and straightforward mounting on metal surfaces. This feature is particularly beneficial for applications where drilling or permanent fixtures are undesirable. Cons • Adhesive Quality Concerns: A recurring theme in customer feedback is the reliability of the double-sided adhesive. Several users have reported that the adhesive can lose its stickiness over time or fail to support the magnet’s weight consistently, leading some to seek alternative mounting solutions such as aftermarket 3M tapes. • Handling Difficulties: Due to the high magnetic pull, some users find that the magnets can be challenging to separate once they snap together. This extra strength, while a benefit in many contexts, may be inconvenient in applications where frequent repositioning is necessary. • Potential for Damage if Misused: There are occasional reports of magnets chipping or breaking if they are forced apart or if they collide with each other too forcefully. Care should be taken during handling to avoid such issues. Recommendations • For Heavy-Duty or Permanent Installations: Consider reinforcing the adhesive or replacing it with a high-quality alternative (such as 3M VHB tape) to ensure a long-lasting bond, especially if the magnets will be used in applications that require a secure, permanent hold. • For Projects Requiring Frequent Adjustments: Be aware that the strong magnetic attraction can make repositioning difficult. If your project requires frequent changes, you might need to plan for additional tools (like a thin pry tool) to help separate the magnets safely. • Handling and Storage: Store the magnets with a non-magnetic separator between them (such as thin plastic sheets) to prevent accidental snapping that might cause chipping or breakage. • Usage Environment: While these magnets perform exceptionally well in controlled indoor environments, prolonged exposure to moisture or outdoor elements might accelerate corrosion if the protective coating is compromised. For outdoor or high-humidity applications, consider additional protective measures. Conclusion The DIYMAG 12Pack Strong Neodymium Disc Magnets present a compelling option for DIY enthusiasts, crafters, and professionals alike due to their impressive magnetic strength and versatility. However, potential buyers should be mindful of the reported adhesive issues and handle the magnets with care to avoid damage. With some minor adjustments—such as upgrading the adhesive for more demanding applications—these magnets can serve as a reliable and powerful tool in a variety of situations.