BYKES 30 Neodymium Magnets Strong Magnets Refrigerator Magnets Super Strong Rare Earth Magnets 1/4 x 1/16 inch Disc N48 Size: 1/4 inch diameter x 1/16 inch thick discs. Nickel (Ni) Plated (silver-like shine) - Axially magnetized Grade: N48 - Extremely powerful magnetic material Pull Force is approximately 1.5 pounds under ideal conditions. WARNING: VERY STRONG MAGNETS. KEEP OUT OF REACH OF ALL CHILDREN. THIS IS NOT A TOY.