Powerful Neodymium Bar Magnets, Rare-Earth Metal Neodymium Magnet, N45, Incredibly Strong 33+ LB Strength - 60 x 10 x 5 mm, Pack of 10

My elliptical trainer is loosing its magnetic resistance. These are helping make my work out harder. They are strong. Watch your fingers when dealing with these, they will bite you

These things are amazingly STRONG. So much that i cannot use it for what i had planned. Well worth the money if you need bionic magnets lol.They are extremely hard to come apart out of the packaging. Be careful of getting your fingers pinched and when separating or putting them together....and keep them VERY far away from each other when separated...Yes, they are THAT strong! If they snap together too fast they will shatter which why i give it a 3 for Durability. One of mine is already broken because they accidentally snapped together hard. Please read the product description in FULL....it pretty much says it all.Dont get me wrong, I am not complaining. Its an excellent product - its my first time purchasing rare-earth magnets and i just didnt dream they'd be THIS powerful..I'm going to have to find something less rare-earthy for my project LOL. I will probably end up using these to mount things in my garage or maybe make a knife holder/block.

These are very strong magnets, when stuck to a reasonably thick piece of metal they are very hard to remove unless you have a thin piece of stiff plastic to slip under them. Not the best choice for fridge magnets or holding shower curtains as they are just too strong to easily remove. For a lot of other uses though, they are great, one can easily hold a heavy tool! I have also used them to hold a curtain to the metal rails of a suspended ceiling just by holding the curtain up to the rail and sticking a magnet to the other side! Great for putting up curtains in an office setting with no need for tools. They will not hold as tight if the metal they are on is thin or has a heavy layer of paint.Remember though that magnets like this need to be handled carefully. Don't let them snap onto a surface or let two magnets fly together. They can hit hard enough to make the magnets shatter and send pieces flying! Also getting skin between two magnets can give you a nasty pinch. Swallowing magnets can be really bad, so don't leave them out where young kids or pets can get to them. I'd recommend handling them one at a time, don't leave two out on a table as they could fly together very fast if they get too close.

Well packaged and the double-sided adhesive seems good. They have sufficient field strength to hold knives very well, through a veneer. They would not work through anything much thicker than that.FYI for anyone going to do this. I cut a groove down the center of a 2x3/4 scrap piece of bald cypress so the magnets would lie flush with the surface. Than glued on some very nice veneer top and both sides. Plugged the ends of the groove by gluing in some small bars of oak. In my case, could screw in from the back so there are no visible screws and the oak plugs provide a harder wood to hold the screws. Very happy with the result.Used 5 of the magnets, and going to do the same again with the remaining 5.

I used 3 together for my application. I am happy with the holding power.