These are powerful neodymium magnets housed inside of a steel cup. The cup protects the magnet and also increases the magnets power by redirecting one polarity towards the other side. Attached to the cup there is a female threaded post that will work perfectly with a standard machine screw.
These are powerful neodymium magnets housed inside of a steel cup. The cup protects the magnet and also increases the magnets power by redirecting one polarity towards the other side. Attached to the cup there is a female threaded post that will work perfectly with a standard machine screw.