

🧲 Stick with the best — tiny magnets, huge creative impact!
TRYMAG’s 20-pack of 18x3mm ferrite round disc magnets combines industrial strength with user-friendly adhesive backing, ideal for crafts, science projects, and office use. Engineered for durability and corrosion resistance, these compact magnets offer a reliable, long-lasting hold while sparking creativity in professional and educational settings.














| ASIN | B09V4H84SB |
| Best Sellers Rank | #309 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Science Education Magnets & Magnetism Kits |
| Brand | TRYMAG |
| Color | Black |
| Date First Available | March 9, 2022 |
| Item Thickness | 3 Millimeters |
| Item Weight | 2.89 ounces |
| Item model number | 18X3 20P |
| Manufacturer | TRYMAG |
| Material | Ferrite |
| Number of Pieces | 20 |
| Product Dimensions | 0.7"L x 0.7"W x 0.12"Th |
| Shape | Round |
| UPC | 860014357442 616833193439 |
A**N
Well-made magnets
I've used 7/8" magnets in my craft for years, but evidently those aren't available anymore. These are smaller at only 18 mm, probably not quite as powerful as 7/8, but strong enough for most of my uses. I adhere magnets to my crafts using E-6000 adhesive so I was happy when I received them without the glue pads already applied. I was afraid I was going to need to scrape a glue pad off of each magnet. They are well made, better than expected, but I wish there was a dimple or paint spot to indicate polarity like the other magnet sizes I use.
C**S
Great little magnets!
I used these to attach some under-cabinet lights and they worked great. The adhesive backing is strong and installation was super easy — just peel, stick, and press. The magnets hold securely but still make it easy to remove the lights when needed. Definitely recommend for small projects like this!
E**N
Not as strong as Neobendium, but cheap and hand to have around the shop.
A nice selection of different-sized adhesive-backed magnets for general use. These are not as strong as Neobendium magnets, but plenty strong for many applications. The adhesive is solid VHB tape, which sticks well to properly prepared surfaces. I keep a box or two of them on hand in my small parts cabinet and am amazed at how often I find applications for them. Great value for the price. I have often paid more than this for just a couple of magnets at the local hardware store. Now I have them in stock and don't have to stop working on a project to go fetch magnets.
M**W
Worked great on cruise cabin doors
I used 3 magnets to hold a wooden star shaped signs on cruise cabin doors. They worked great however they slipped a little on doors that slammed shut. The wooden stars were light weight but maybe I needed to use 4 magnets each.
W**E
Super strong magnets
These are a small round heavy duty magnet! They were great, super strong and very small to make it convenient. It was a great buy for the money. They are fun to use on a lot of different things and they are not breakable. You can get a lot of use out of these magnets.
M**T
Not exactly as described
Not as strong as described and there is NO adhesive backing. I guess you get what you pay for. Would not order again.
C**E
They work well
I put them in my sockets and they hold the bolts really well they’re at the right size where they’re not oversized but they’re really strong. They work really well.
A**A
Great price for the magnets and very good magnets
Holds amazing and the quality and price you pay for these is worth it and especially if you use them for different crafts. I still have lots of extra ones. They are so useful .
S**Y
I have to come leave a five star review because these small little magnets have impressed me. I bought them for this swinging door that won’t stay open. I put one magnet on the door and one on the door stop. Works amazing! I even put a photo to show on the other side of this door there are some heavy spice racks and this little magnet keeps the door opened all the live long day (if you want that) lol highly recommend. Good quality. Quite strong!
D**H
Good for small pictures etc but nothing big even if you put multiple on them to hold some weight disappointed only good for pictures or to hang small stuff
B**M
Just what I needed. Magnet is strong enough for my purposes (but not super strong).
T**R
They really cling to metal.
ر**م
عملية ومفيدة
Trustpilot
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