Magnet:GM-45 1) Used For:siren,driver unit,speaker,horn ... ODM/OEM Service 4) RoHS Detailed Parameter of GM-45:1) China Direct Manufacturer2) RoHS3) Material:ferrite4) Item ... Dimensions:45*22*8, Y30 5)Used For : siren , driver unit ... to guarantee customers' benefitsDistinct Picture of MG-45: MG-45 speaker magnet,Ferrite Magnet,china