This 5/8" disc magnet is made of grade N42 neodymium magnetic material, i.e. the top quality magnet material made under strict ISO 9002 quality control systems. Comparing with other sellers' neodymium magnets, CMS made magnets are stronger and coated better. CMS made magnets also last longer than other vendors' since we never use recycled material. This magnet is Ni+Cu+Ni triple layer coated and made to the tolerance of +/-0.01mm. It's magnetized through 1/8" thickness. Gauss Rating: 13,200 Gauss
Holding Power: 7 lbs.
Polarity: Poles are on the flat surfaces.
Coating: Ni+Cu+Ni plated, the BEST coating available.


About CMS Neodymium Magnets:
Neodymium magnets are one of rare earth permanent magnets. Neodymium magnets are also known as NdFeB magnets, or neo rare earth magnets. Since it's very strong, people also simply call it super strong magnets or super powerful magnets. The major elements of this magnet include neodymium (Nd), iron (Fe) and boron (B), or NdFeB.