1.custom size&grade&coating 2.best price 3.quality prior&timely delivery 4.application:industrial ... AH-(N28AH, N30AH, N33AH), working temperature:220 degree Celsius.2.3.Magnet shape: Block,Ring, Arc,Disc, Cylinder, Rod,Bar, Cube,Sphere ... the most that we can do for you. NdFeB strong block magnet