4Pcs Rubber Coated Magnets, 30LBS Bolt on Magnets with M6 Threaded Studs and Nuts, Strong Flag Neodymium Magnet Mount Base with Rubber Coating Non-Slip, Anti-Scratch for Light Bar and Add Mirrors

Bought these to mount a rear view camera on a metal camper shell as I did not want to drill holes. Very strong and they worked perfectly for my application.

Received on time, used for mounting tow harness 6-pin connector on an off-road steel bumper. Second time I have mounted this way, works great. Very strong magnets.

I used this to mount a knife rack on a spice cabinet and it is really stuck on there. I could have used 2 but I used 3 to hide the mounting holes. I have to use my body weight to pull it off the cabinet. It is actually kind of dangerous placing it back on because the force is so strong.It can also withstand the pull force of a tape dispenser. As you can see in my photo, I attached 4 other neodymium magnets that were too weak. I drilled a couple of holes to use these magnets and it is perfect. The rubber covering is great because it won’t scratch up surfaces.

STRONG magnets, and the silicone prevents scratches. A+ product!!!

I definitely recommend going with the stronger of the options. With the rubber coating, it decreases the connection strength to the metal surface.

Great so far, mounted to my clipboard to keep it from falling off the forklift at work. The only concern I have is that the washers are small and might break through the plastic if tightened or abused too much. Good item.

Strong for a little magnetic.

Very strong magnets. Worked well with what I needed them for