20Pcs Small Strong Neodymium Magnet Bar，Rectangular Rare Earth Magnets Heavy Duty，Extra Strong Square Magnets for Refrigerator Crafts Industrial Tool Storage (30x10x3mm)

13 reviews for 20Pcs Small Strong Neodymium Magnet Bar，Rectangular Rare Earth Magnets Heavy Duty，Extra Strong Square Magnets for Refrigerator Crafts Industrial Tool Storage (30x10x3mm)

1. 

   Jon Eyrick – November 25, 2025

   Nuclear magnets
   I love me some good strong magnets. The size on these is just right, big enough to stick well and still be easy to remove. I did break a couple but that’s just because they are so strong. Great value

2. 

   Concerned Consumer – November 25, 2025

   These work well for alarm sensors on double hung windows.
   Well, if you know anything about alarm sensors, you know that the typical magnet will not work on a double hung window. They’re too big. The double hung window means that you can open the top window or the bottom window or both windows. But the problem is that you would need two alarm sensors and two magnets for each window with the old style. Alarm sensors aren’t cheap. These magnets eliminate that problem. You can install one alarm monitor on top of the bottom window, and then you can use two-sided tape to attach the magnet to the window next to the alarm sensor, thereby, allowing the alarm sensor to work, no matter which window is opened.The magnets come with two-sided tape, which works pretty good for sticking it to the window. However, you kind of want to get it on right the first time otherwise you’ll need a razor knife to get it off again and reposition it.I’m not sure what these magnets are made of but they’re really strong. And they look like chrome, plated, or stainless steel. They look very durable.I wish I could leave a picture, but I’m not giving Amazon access to my pictures or camera.

3. 

   2ShyDawg – November 25, 2025

   Works great
   Door frame is metal, and works great with light fish netting.

4. 

   shawn – November 25, 2025

   outatanding magnet
   very powerful magnet

5. 

   MMILL – November 25, 2025

   Not 10mm wide as advertised!
   The magnets were only 9.5mm wide. The other dimensions were correct. The strength is really good, but I have nothing to test the actual strength.

6. 

   JONNY Z. – November 25, 2025

   SON BUENOS PERO…
   Los imanes cumplen su función, aunque no son tan poderosos como esperaba. Aun así, sirven bien para aplicaciones ligeras y llegaron en buen estado. Buena opción si no necesitas una sujeción muy fuerte

7. 

   charles – November 25, 2025

   I will be purchasing again!!!!
   Strong little magnets at a great price.

8. 

   tmegahee – November 25, 2025

   Excellent product !
   I have to write something to make the A….n review bot happy, which I think is ridiculous, considering I gave this item an excellent review

9. 

   Amazon Customer – November 25, 2025

   As described, good enough for holding a piece of paper or cardboard on a fridge or metal surface but not more. I don’t know why they call them ”heavy duty” , it did not work for my little mecanical project that has already similar magnets (size) but are twice as strong as these ones. The search begin…

10. 

    ANNA LINDA – November 25, 2025

    Strong little pieces of magnets but breaks easily.

11. 

    Hergy – November 25, 2025

    The magnets do what I want them to do.Not as strong as “rare earth” magnets but work just fine for my applications-thanks team for a great product.Cheers Hergy

12. 

    Alex – November 25, 2025

    Expected to hold better and very disappointed that they break so easily.

13. 

    Customer – November 25, 2025

    3 of the 20 magnets were snapped in pieces when I opened the undamaged and well packed box. The rest of them seem to be fine