N40 4" x 2" x 1/2" Ring, Package of 1 Rare Earth Neodymium Magnets

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Price: $44.75    

Product Feature

• Neodymium Iron Boron (NIB) Rare Earth Magnets
• Package of 1 Magnet
• Grade - N40
• Pulling Force - 160 lbs
• 4" Outside Diameter x 2" Inner Diameter x 0.5" Thick

Product Description

Rare earth magnets are the strongest type of permanent magnet currently made. They are amazingly powerful for their size and have innumerable uses. These ring magnets have an outside diameter of 4 inch x an inside diameter of 2 inch x a thickness of 1/2 inch (0.5). They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Their individual pull force is approximately 160 lbs.

N40 4" x 2" x 1/2" Ring, Package of 1 Rare Earth Neodymium Magnets Review

This came in the mail within one day. It was packed well... although I did not see a warning on the package warning mail-room workers of the potential harm to electronics. This thing is SUPER strong. I've already mashed my hand setting it on a metal table. It seems a little brittle.... but I think that's the characteristics of a magnet. I wish it was 1" thick rather than .5"s thick.... but that would double the costs.

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