Neodymium Disc Magnet 40mm x 20mm – 200 lb Heavy-Duty Round Permanent Magnet for Industrial, Workshop, and Craft Applications

This is a very strong magnet that will do the job for pretty much anything you need a magnet for. Unless you need an ultra strong magnet to lift a very heavy object this is a great, small and powerful magnet. For the prie you can't beat this magnet. This magnet will do the job for anyone that needs a magnet for catching metal things that got stuck some where you can't reach or anything around the house grabbing anything that's metal. The only reason you would need a stronger magnet is if you used magnets for your job, or trying to attract very heavy metal items, but I use it just in case there are things around the house or in my car that this magnet can attract so I don't have to reach into small spaces to try to get change in my car that fell beneath the seats or any other metal items I would have a hard time reaching. To me it's a great item that's very cheap to have around the house or in you car for those metal objects that get trapped or if you just like to play with magnets, this one is smaill but very powerful, so again. I'd recommend this item to anyone.

A friend told me about this magnet and I was shocked at how strong it is. I use this in a silver dollar plastic container to get black sand out of gold paydirt. It's amazing at it's power. If anything metal is close it will go flying to the magnet and pinch your fingers if not careful. I learned the hard way. I promise you will love it.

I have a number of these magnets in different sizes for various applications. This particular magnet is very strong, so I recommend being careful with it and not letting it get stuck to other magnets, as it can be quite difficult to get unstuck.This magnet is reliable and strong, and I have some furniture with magnetic closures that require a magnet to operate, and this works perfectly. It is a little on the expensive side, but it functions well.

Very strong, nice

What was that application? To hold a hex socket to a metal plate. Why? To put a brass tube in the socket. Why? To mount a cheapy digital microscope head on the brass tube. Why? To do fine soldering work and be able to move that head anywhere on the metal plate to suit where it was needed rather than the fixed plastic base that came with the microscope. But as pointed out. BE CAREFUL!!! This thing is STRONG and has no problem crushing little fingers or nabbing ferrous materials that get too close!

The 5-star rating may be a little premature. I bought this magnet to use on the metal canister oil filter on a Ford Powerstroke diesel engine. The thought being that this magnet would give the same benefit of capturing metal shavings that the Filter Mag gives. But at a greatly reduced cost. The magnet grips well and is hard to remove from the metal oil filter canister. I am somewhat concerned about that as these rare-earth magnets are known to be brittle. I have used smaller magnets that fractured rather easily. I have yet to cut open a filter to see if there are any metal shavings captured on the inside canister wall where the magnet is located on the outside of the canister wall. That is why the 5-star rating is a bit nebulous. I am not worried about losing this magnet. It is powerful.

Use with coin holder to remove black sand from paydirt. Strong magnet

I recently bought an 'N42' magnet from a competitor, and it was terrible. The 'pull weight' was supposed to be something like 87 lbs with a dead lift weight of 8 - the thing could not even lift a 12 oz set of shears and I had no trouble separating it from an n40 that easily lifts a 2lb dumbell.Now this...wow! It lifted a 5lb dumblee with no sweat! SO STRONG!If thats what you need, get it - but be careful. I inserted it into a homemade shoulder brace and the other neodium magnets zipped over so fast they shattered! So be careful of its strenght.Also - I left it a few uiches from my computer, and the fans stopped working and I got weird images on the screen. So keep it away from sensitive electronics (they were fine once I moved the magnet away)