permanent magnet strip,neodymium magnet, used for speaker . Material: NdFeB magnet, Permanant magnet Application: speaker, package box, toy ,and so on stirp Magnet Type: Disc ,sheet Size ... .5, 5*1.2,(diameter*thickness, mm) Material: NdFeB magnet, Permanant magnet ; Grade: N35-N52,33M-48M,33H-48H,30SH-45SH,30UH ... , whose diameter and thickness ,hole size can be custom-made. permanent magnet