Universal-fit 3 Round Ultra Strong Power Magnet Base/Magnetic Holder for LED Offroad Light/Work Light/Light Bar Mount on Steel Surface of Trucks & SUV, w/Rubber Pad to Prevent Scratches, 2 Pack

The magnets are very strong. I used them to install some lights on my mower. They handled the bouncing of the yard very well and have not moved. You do need to be mindful of branches, it does not take a great deal of force to pull off the magnet. The space below the hole where the bolt goes is tight and I had minor difficulties getting the bolt and nut started and tight. It is do able but I think just a little be bigger opening would be better.

Decent hold. Cheaply built

Strong magnets

Have you ever thought, “gee I wish I could stick this thing on that piece of metal really good without drilling holes”? Because holy crap these things work. I’ve got a 40” light bar across my room with one of these on either side because I don’t want to permanently alter my vehicle. If you push and pull on the light bar it just shakes the entire vehicle, and if I felt so inclined, I’d bet that I could use this to tow other cars from (granted nothing extreme).

havent moved since I placed them on my truck roof, super strong magnets

These aren’t the cheapest on amazon, but they are very strong. I was concerned after seeing another reviewer that said their light bar fell off at highway speeds so I attached a safety cable for the first month just in case. After off-roading some rough back roads, and several times driving on the highway at 75 mph with 40+ mph headwind gusts, this thing hasn’t budged. I’m guessing the other persons issue was user error. You might have to bend or tweak the mount a little bit to make sure the magnets sit flush on the steel. Then they are rock solid. I’m using with a 52” curved light bar on the roof of my truck. I love that I didn’t have to drill any holes in my roof, and that it’s far enough back that I don’t have to deal with wind noise or the light reflecting off my hood (like if it was mounted above the windshield). Great mounts. Don’t worry, they are plenty strong if you use them correctly.

Wow! I placed one of these brackets on one of our square in home steel supports in our contemporary kitchen and it took me about 5 minutes to remove it from the support! I would have never thought these magnets would be so strong! Scary strong! I bought these for a new Kubota tractor to place a light bar and rear work lights! I dropped them by the Kubota dealer today and they were more than surprised how strong the magnets could be! They put 2 of these together and it took 2 guys several minutes to pull apart! I would not hesitate to buy these again! I was concerned about the price of them but I was extremely amazed! All I can say is wow! I would not hesitate to buy again!

Didnt actually use but the seem pretty strong

So, the magnet is VERY powerful. The base is vinyl coated to help minimize scratching of the surface to which it adheres. I used this magnet to mount a small LED light bar to my snowblower. The light never fell off. However, due to the smooth, painted surface of my snowblower and the smooth vinyl coating of the magnet, the magnet would rotate and not remain pointed in the desired direction due to the vibration from the engine, even at idle. So, though I would highly recommend this magnet for adhering to a stationary surface, I would be very hesitant to recommend attaching it to the surface of any object that is moving that may cause jolting or vibration.

Used them to mount LEDs to ROP on my Kubota tractor. Liked the 1st 2 I bought so much I purchased 2 more just to have extras.