CESS 3.5mm 3-pole Female Stereo TRS Balanced Socket with Switch (LW) (3 PACK) Model: TRS( 1-Tip/1-Ring/1-Sleeve),Stereo,3 Pole 3.5mm 1/8 inch female panel/chassis mount socket Soldering type Use for microphone jack, earphone plug, Audio Video AV PC. Nickel plated for maximum signal transfer & durability Package included 3 Pieces