These small 3mm-diameter neodymium disc magnets have a pull force of 22 pounds. Neodymium 40 rare earth magnets are nickel-plated for a shiny corrosion-resistant finish that withstands years of use. These neodymium disc magnets are axially magnetized, with the North and South poles on the flat sides.
The dimensions of these neodymium disc magnets are 0.5" diameter by 0.5" thick. They're made of a neodymium, iron, and boron magnetic alloy blend.
You get four magnets per package. Use them in experiments as well as for crafts and closures. Neodymium disc magnets are also great to help keep objects secured or fastened to any ferrous surface.
Please note: Neodymium magnets are more brittle than other types of magnets and can crack or chip. Do not try to machine (cut) them. To reduce the chance of chipping, avoid slamming them together.
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