Largest size, Largest flux: 6,000 gauss, Coatings of magnets: Zn, Ni, epoxy, High grade canbe used, ... N38SH, N38, N42, N45 etc. 1.Product: Sintered NdFeB / NdFeB magnet / Rare Earth Magnet2..Standard:ISO9001:20003..Grade: N50,48M,45H ... ..Availability of the product:Small and special electrical machines,permanent magnet meter,electronia industry,motor vehicle industry,petroleum and chemical industry ...