... delivery & excellent service N42 8*5mm strong neodymium magnet These magnets will have approximately 5150 Gauss on ... Round, Disc, etc.MaterialsSintered Neodymium-Iron-BoronCoatingNickel,Zinc, Nickel+Copper+Nickel, Epoxy, Gold, Silver, Cr3+Zn, any coating as you like . ... , wind generators, sensors, leather, toys, package etc.Neodymium (NdFeB) Permanent Magnet Available Grades in: N, M, H, SH, ...