OPPXUN 1Pc/2Pcs SL16 Antenna Adapter for Motorola for GM300 SM120 SM50 GM338 Two-Way Radio
https://www.vogueparade.com/shopping/EN/200380144/1/1005002271270921/oppxun-1pc2pcs-sl16-antenna-adapter-for-motorola-for-gm300-sm120-sm50-gm338-two-way-radio//