Heavy Duty Ring Magnets - Ultra Strong (1.2x0.18/30x4.5mm, 40 pcs) Magnets with Holes for DIY & Crafts - Space Organization Set for Home, Workshop, Refrigerator, Whiteboard, Office, Classroom

These magnets were a life saver to me! I was working on a wearable art piece and needed an easy way for my model to get into the outfit and seal them in. These magnets were magic. I had previously used some that were not strong enough, these were STRONG! Very thick and help through layers of paper. I purchased 2 boxes, one would have plenty. Now I have back up for future projects. Strong Hold, easy to glue to a project and use.

These little magnets are great! They are strong and work great. I am a teacher and I use a white board to write on but I also use it to mount pictures. Our white board is old and wavy in spots so magnets do not hold well but these little magnets holds everything great. We also use them to play a new game where the magnets are in a circle and you try not to let them attach to another magnet. They worked great for the game also. We had fun playing with them Christmas.

These are great magnets. I needed them as a magnetic mount for a device for my car dashboard. I’m not certain, but I think the adhesive needs to set for a time. When I first affixed the magnet to my dash, it came off almost immediately. Then I put it back onto the dashboard, and about two hours later the magnet didn’t move (and hasn’t moved since.) My only issue is the package contains far more of these very good and powerful magnets than I need. I feel there are enough to share with family and friends.

Strong magnets with good holding power for their size. The adhesive backing works, but it’s not the strongest and may need extra glue for heavier items. Overall, decent quality for light use not for heavy weight.

It works exactly as expected. I decided to buy one of these small magnets and use it to my indoor Hue smart Home sensor that way I don't drill into the wall or position it tacky on top of an object where it becomes clearly visible instead it actually looks like it's a part of the natural decor/house. Pretty easy to install just peel the thing off stick it onto the wall hold it there for about 30 seconds and it should stick if I'm not mistaken. This is 3M VHB which is shorthand for very high bond M3. Basically hold well and the longer that it sticks onto the object the better bonds. They're pretty easy to use and ever since I used it in this product now I'm brainstorming for ideas on either to hang my fancier kitchen knives using a magnet that sold by the same vendor of this circle magnet would get creative. I think it's worth it for the money you get a decent amount of them. It's pretty straightforward simple to operate. Nothing confusing, peels off like a standard sticky tape. It may feel like it's not super sticky, but that's the way the M3 is designed once is stuck on the wall it will hold/grab. It starts to bond once it touches a hard surface. The magnet themselves are thicker than a quarter but about 3/4th of the size. It doesn't slide back-and-forth once it's on just put it into the wall and give it like a 30 second push and hold. It's ready to go generally with m3 type of bonding stuff. You have to wait a little bit, but this is not the same as command tape they're pretty much quicker and longer it stays the more grips, but I would probably just wait a bit before putting something heavy in there. It works for perfect for my application makes everything flush and it looks like it's part of the wall

these are great!! nice size, very strong, i felt like the price was very good given the quality of the magnets.

Yes, they possess strong magnetic properties. Bought these to demonstrate properties of magnetism to my grandkids. BE CAREFUL however. They have a tendency to splinter with small sharp fragments from minimal handling. Not recommended for casual play.

They work well and are useful, well priced