Strong Magnet:GM-602 1) Used For:siren,driver unit,speaker,horn speaker 2) Stable,Ferromagnetic 3) ODM/OEM ... :60*32*8mm /10mm/12mm/15mm5) Used For:siren,driver unit,speaker,horn speaker Product Characteristics:1) with high quality at ... type3) with powerful magnetic properties4) widely used as speaker&siren&driver unit magnet5) with excellent after-sale service to guarantee customers' benefits ...