BYKES 10 Neodymium Super Strong Extremely Powerful Rare Earth Refrigerator Magnets 1" x 1/8" Inch Thick Disc N40 Size: 1 inch diameter x 1/8 inch thick discs. Pack of 10 Grade: N40 - Extremely powerful magnetic material Pull Force per magnet is approximately 12 pounds under ideal conditions. Nickel (Ni) Plated (silver-like shine) -Axially magnetized WARNING: VERY STRONG MAGNETS. KEEP OUT OF REACH OF ALL CHILDREN. THIS IS NOT A TOY. DO NOT INGEST OR