NdFeB round Neodymium magnet disc, used for speaker Material: NdFeB magnet, Permanant magnet Application: speaker, package box, toy ,and so on sheet Magnet Type: Disc ,sheet ... Size: According to customers's request Material: NdFeB magnet, Permanant magnet ; Grade: N35-N52,33M-48M,33H-48H,30SH-45SH,30UH ... diameter and thickness ,hole size can be custom-made. NdFeB Round Neodymium magnet disc