CablesOnline 2-PACK 3.5mm 1/8" Stereo TRRS 4-Pole Male Connector with Spring Relief, (CN-018-2) 3.5MM TRRS IPHONE CONNECTOR 1/8" 4-POLE PLUG TRRS SOLDER PLUG STEREO PLUG 1/8" TRRS 3.5MM 4-POLE PLUG