Warning:
These are very strong magnets. Neodymium magnet is metal, but it is not iron or steel.
If a neodymium magnet attracts another one, the collision can damage both magnets.
So please always avoid collision of neodymium magnets.
Also, these are very strong magnets, if you hold a neodymium magnet in hand, your
fingers can be hurt by the magnet which is attracted by the magnet in your hand.
WE CAN NOT BE HELD RESPONSIBLE FOR THE HURT CAUSED.