Compatible with for two way radios walkie talkie that required 2 pin plug. Including Series, XTN Series, P100 Series, CP Series, DTR Series, P Series, , XTN XU Series, XTN AX Series, Spirit Series, Spirit Series, Spirit MV Series, GP Series, SP Series, CT Series, Series and Other Series: ECP100, EP450, AP10, AP50, AP73,PMR446, MagOne BPR40, AU1200, AV1200. For use with the following 2 way radios and many more that require a dual pin plug approximately 5/16 inch (standard 2 for ) Series: CLS446,CLS1110,CLS1410,CLS1413,CLS1450,CLS1450C,CLS1450CB,CLS1453CH. XTN Series: XTN446,XTN500,XTN600 .XTNi Series: XTNi,XTNiD. P100 Series: P140,P145,P160,P165,P180,P185. CP Series: CP88,CP040,CP100,CP110,CP125,CP140,CP150,CP160,CP180,CP200,CP250,CP300; DTR Series: DTR2430,DRT2450,DTR410,DTR450,DTR510,DTR550,DTR610,DTR650; P Series: P10,P50,P50+,P040,P080,P100,P110,P200,P1225,P1225LS,PR400; : PRO1150,PRO2150,PRO3150; XTN XV Series: XV1100,XV1400,XV2100,XV2600,XV4100; XTN XU Series: XU1100,XU2100,XU2600,XU4100; XTN AX Series: AXV5100,AXU4100 Spirit Series: SV10,SV11,SV11D,SV21,SV12,SV22,SV22C,SU210,SU22,SU22C,SU220,Spirit,Spirit Pro,Spirit Pro+,Spirit HP10; Spirit 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; GP Series: GP63,GP68,GP88,GP88S,GP280,GP300,GP308,GP350,GP600,GP2000,GP2100,GP3188; SP Series: SP10,SP21,SP50,SP50 Plus; CT Series: CT150,CT250,CT450,CT450LS; Series: RDV-5100 RDV5100,RDV2020 RDV-2020,RDV2080D RDV-2080D,RDU2020 RDU-2020,RDU2080D,RDU-2080D,RDU4100,RDU-4100,RDU4160D,RDU-4160D; Other Series: ECP100,EP450,AP10,AP50,AP73,PMR446,MagOne BPR40,AU1200,AV1200 Color:Black Material:plastic Package Contents: 10 x 2Pin Earpiece Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.