MUTUACTOR 4PCS Strong Round Cup Magnet with 1/4''-20 Male Threaded Stud,Φ1.26 115lbs Vertical Pull-Force Non-Shattering Neodymium Magnet with Nut and Washer for Lighting Camera and DIY Brackets

Used magnets to install rear camera and monitor on skid steer. Magnets hold both very secure. Used two on each

These little magnets are super strong. I used them to mountmy solar panels. The only thing that I would love to see is a stainless steel option to prevent rust in outdoor use.

These are very strong! You won’t regret!

Everybody overestimates the strength of their magnets, but it depends on the steel it's attached to also. These (115# 1/4 x 20) magnets came in a small ziplock bag, and I almost couldn't get them out. They stuck to each other with such force I thought I'd have to get a pry bar to get them separated. In the end I used a towel to protect my fingers and pulled, twisted, pried and finally got them separated! I use them to mount a Milwaukee charger on the side of my toolbox and I didn't want to drill into the toolbox. Let me describe the process. The magnets fit perfectly in the corner holes of the charger bracket. I approached the toolbox area I had cleaned with alcohol, just for cosmetics. As I got about 3" from the toolbox, the bracket jumped to the side of the toolbox and stuck so hard I had to use a screwdriver to pry it loose to reposition it. There's no sliding it, it just went "WHAM"! Glad I didn't have my finger in between, or I'd still be calling for help.

Two of the packs had the wrong size washers. The threaded shaft may be 1/4-20 but the nuts are 10 mm. Holding power is okay. Not worth $5 a piece.

I used these magnets with the holes on my farm signs and put them on my tractor and trailers when their in use, and they work well, at lower speeds.

I bought these to use to mount some LED stage lighting to a lighting T bar stand. The lighting units themselves only weight about 10lbs, and I have 1 of these magnets on each end of the light. They work incredible at securely holding the lights to the stand. Easy to set up, easy to position and easy to remove. I can shake these stands violently while the lights are attached, and they do not budge. I did everything in my power to try to get them to fall off of the stand, and they would not. Of coarse I use a steel safety cable just in case. But this was is very good solution to use for mobile dj's or traveling performers, rather than big bulky and heavy c clamps that are usually used for this type of rigging, these strong studded magnets are a great alternative.

Most magnetic products like this have weak magnets that keep falling off. Not true in this case. The manufacturer produced strong magnets that probably could not be made any stronger without creating problems with attaching and detaching the magnet from a surface. I mounted these magnets on a small transparent file holder. It in turn is magnetically coupled to a metal door. I can clearly say that this setup does not move even when the door is slammed. This is an excellent product for the handyman who wants to create things that stick to his/her doors and refrigerators. I don't see how this magnetic coupler could be designed any better.