1.permanent magnet , use for motor generator, permanent magnet generator 2.arc shaped, costumed size 3.welcome to contact us 1.permanent magnet , use for motor generator; permanent magnet generator2.arc shaped, ... for detail4. material : Neodymium magnet, NdFeB magnet5. coating : NiCuNi, black epoxy coating,6. please tell us working temaptureProduct: Sintered NdFeB magnet permanent magnet Generator