A Neodymium countersunk magnet is a Neodymium ring magnet with one side appearing as a standard ring but the other side has an angled countersink to take a screw head, the angle usually being (but not always) 90 degrees. A Neodymium counterbore ring magnet is a ring magnet with a cylindrical flat-bottomed hole on one side that enlarges the main cen1
Neodymium magnets with mounting holes can be screwed in place and allow the magnet to be easily fastened into place for a temporary or permanent fitting. The North and South poles are on the largest flat sides that have countersink holes.
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