"For use with the following 2 way radios and many more that require a dual pin plug approximately 5/16"" (standard 2 prong Motorola) * XTN Series: XTN446, XTN500, XTN600 * XTN XV Series: XV1100, XV2100, XV2600, XV4100 * XTN XU Series: XU1100, XU2100, XU2600, XU4100 * XTN AX Series: AXV5100, AXU4100 * CLS Series: CLS1110, CLS1410, CLS1413, CLS1450, CLS1450C, CLS1450CB, VL50 * Spirit Series: SV10, SV11, SV11D, SV21, SV12, SV22, SV22C, SU210, SU22, SU22C, SU220, Spirit Pro, Spirit Pro+, HP10 * Spirit MU Series: MU11, MU11C, MU11CV, MU12, MU12C, MU12CV, MU21C, MU21CV, MU22CVS, MU24CV, MU24CVS, MU24CVST * Spirit MV Series: MV11, MV11C, MV11CV, MV12, MV12CV, MV21C, MV21CV, MV22, MV22CV, MV24CVS * CP Series: CP88, CP040. CP100, CP110, CP125, CP150, CP200, CP250, CP300 * GP Series: GP2000 , GP2100, GP300, GP308, GP68, GP88, GP88S * SP Series: SP10, SP21, SP50+, SP50 * CT Series: CT150, CT250, CT450, CT450LS * P Series: P040, P080, P110, P1225, P1225LS * DTR Series: DTR410, DTR550, DTR610, DTR650 * Other Series: GTI, GTX, LTS2000, VL130, PMR446, ECP100, PR400, MagOne BPR400, EP450, AU1200, AV1200 * RDX Series: RDV-5100, RDV2020, RDU2020, RDU2080DD, RDU4100, RDU4160D, RDV2080D, RDV5100"