These Neodymium Magnets are N52 Grade, this means that they are Stronger than Any Comparable Product of a Lower Grade such as N35, N42, N45, N48 or similar products were no Grade is Specified. Beware of Purchasing Neodymium Magnets for which the Grade is Not Specified. You might be Buying a Weaker Magnet than intended. Corrosive-Resistant Surface Finish in order to Endure Harsh Environmental Conditions. No Need for Extra Coating to Protect the Magnet. The Nickel-Copper-Nickel Coating is Smooth and Should not Scratch Any Surface if Used Correctly. Neodymium Magnets Have a Very High Resistance to Demagnetization. This Makes Them Perfectly Suited for Various Industrial Applications. Neodymium Magnets are Brittle and may Chip or Shatter, but if Used Correctly They Should Last a Lifetime.
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