These are Super Neodymium Disc Magnets from the Magnet Source|
Not for Children!
Neodymium magnets (Nd-Fe-B) are composed of Neodymium, Iron, Boron
and a few transition metals. It's the strongest magnetic material
in the world!
These magnets may be small in size, but they have extremely strong
Very high resistance to demagnetization.
Good in ambient temperature.
Metallic in appearance.
(3) Disc Magnets
(1) Steel Keeper Bar
Diameter: 0.7" (18mm)
Thickness: 0.11" (3mm)