Strong Disc Round Rare Earth Permanent Nd-Fe-B Neodymium Magnets/eyebolt ring Description: Shape: Disc Round with eyebolt ring Magnetic face: 50mm * 50mm (Dia. * High ) Thickness: 10mm Magnetizing direction: the plane of N S poles Plating: Ni-Cu-Ni ( Nickel ) Material: NdFeB Color: Silver Quantity: 1pc Tip: 1, Strong magnets should Keep away from Ironware and some easily magnetized iron products, such as monitors, bank cards, computers, televisions, mobile phones and other. 2, Strong magnets should be stored in a dry, heated environment, and need to use of plastic, wood, cardboard, foam to separated and wrapped. 3, Magnets might be interested in water meter ,Electric meter, gas meter and some metering equipment exist some inaccurate affect (Such as : if magnets placed near the meter, the meter will slow down). Package included: 1 X Strong Disc Round Neodymium Magnet.