1. 1: 3.5mm 1/8inch TRRS (4-Pole) Male , 2: AV 4-Pin Screw Terminal Block 2. 3.5mm Screw Terminal Block Cable connecting single wires with open cable heads to your 3.5mm . 3. 3.5mm trrs cable has four conductors-three signal and a ground as opposed to a more common stereo 's two. 4. Speaker wire to 3.5mm adapter cable is no soldering required, easy to use, Requires only a screwdriver and a wire stripper to terminate 3.5mm (1/8 Inch)Stereo TRRS Audio cables, Saves time and hassle for installers. 5. Great for devices with 3.5mm (1/8 Inch) Stereo Audio Port microphone, earphone, Speaker, PC and more (1/8 Inch) devices. Product function: You can connect audio cables to transmit and extend audio signals. Product male head: Audio 3.5mm 4 section male head Product terminal: 4P terminal Product wiring : solder-free, terminal screws are fixed. Product applicable equipment: Audio 3.5mm interface audio and video equipment Function: The audio cable can be connected from the outside to transmit and expand the audio signal. colour:Black Material: copper size:30cm Package Contents: 1 x Adapter cable Only the above package content, other products are not included. Note: Light 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.