This product is an annular neodymium magnet for hair dryer (hair dryer) tuyere. The material is die-bonded NdFeB. The size is 57mm in outer diameter, 47mm in inner diameter, 2.5mm in thickness, and the magnetization method is 24-pole magnetization. The waveform is sine wave. Surface gray epoxy treatment, about 2400gs, welcome to inquire and customize....