Ndfeb Nd48m 40(+0/-0.25) X 25(+0/-0.21) X 12.1(+0/-0.15) X R100.5(+/-0.1) 

As for NdFeB magnet statement:

1.NdFeb magnetts is mainly made of Neodymium, iron and boron, 2. NdFeb magnet are made for Dc motor, speaker, linear motors, MRI., medical and health products, wind turbine , 3.Coating: Zn , Nickle, Nickle-copper -Nickle, Au , Ag, Epoxy , phosphatsing , parylene, 4.Neodymium Iron Boron ( the most powerful rare earth magnets availabe today , possesses high enerty ranging from 8MGOe to 64MGoe and wonderful coercive foce. 5.The products widely used in electric automobile, wind turbine, frequency conversion air condition , nuclear magnetic resonace, DC rom drive, vibratng motor, dc motor, audio -systems, sensor, apparatus and meters, mining, toy, 6.NdFeb ring magnet are usually used for loudspeaker .


For another, NdFeB magnets are also called,Rare earth magnets, Strong magnets. They are known to be the most powerful type of permanent magnets. Neodym-
ium magnets are also sensitive to heat and can lose a fraction of their magnetic strength at
temperatures above 80°C.Since Neodymium magnets are so strong and powerful, we sho-
uld be more careful when handle them.