Magnetpro Rectangular Magnets 80 LBS Force Size 2.36" x 0.53" x 0.20" Black Epoxy Coating Rust Resistance, Suitable for Outdoor Area, Household and Industrial Pot Magnet with Screws Pack of 8

These magnets are very strong together, making them difficult to pull apart, which can be frustrating. That being said, the instructions did mention the best way to accomplish this, so points for that, but it still takes patience, strength and leverage. The magnets and accompanying screws came in a nice plastic case and were unbroken. No damage came to the magnets when I was forcing them apart, although I could not remove a magnet from its metal casing.My project: I needed to stack a few strong magnets together to screw to a door stop in the jamb to hold a full-access bifold door closed at the center. I already had a magnet for the end of the door, which was working fine, but the center of the door would not pull shut fully, making the door "bulge" at the center "seam" when closed, and the door was not inset close enough to the door stop in the jamb. By stacking these together, they not only hold well to the metal plate attached to the door, but are at the right distance from the door stop to the door, creating an evenly closed door. Hooray!I described this usage because the tiny M3 screws that came with the magnets were not long enough to hold 4 stacked magnets in place. I had to find and purchase 40-50mm M3 screws to accomplish this and, believe me, they are hard to locate, unless you need carriage bolts, which are not self-tapping.As other reviews have mentioned, it would have been better if longer screws had also been included, since it's possible the tiny screws would not necessarily have enough bite into wood to firmly mount the magnet.I will update this review if anything changes in terms of the magnets' efficacy.

Very powerful, but just a bit brittle. Take care when screwing in.These are useful when making wooden pads for metal vises.

Earth Magnet Strong. I am not sure what the steel cover does since the screws mount to the counter sink in the magnet. The screws suck but I anticipated that.

These magnets worked very well. The strength was great but my wife stopped me from making a project I was using them for so I can not tell you more. If you need a strong magnet these work.Grinch

I’m using these fastened to the outside edge of a cart to hold a couple random hand tools. I was concerned the listed 70lb magnet strength might be too strong, but I have found them to be a perfect balance in holding power. Nice and secure, but still readily accessible.

yes, they are powerful. I haven't use them yet for what i purchased them for. I am old woman so and easy fix. a plastic shutter came off in a storm. not at ground level so hard for me to fix.no drill to drill out broken screws. try alien tape NO did not work. stutters not heavy, i can pick up with one hand, plan to screw magnet to house and other to shudders. Maybe it will work.

Super powerful magnets but what the hell, these are unbelievably brittle. Broke every single one. Glue don’t screw, guaranteed to break if you try to use the screw holes

these are strong magnets. used them to latch my wooden screen doors.