1. Connectors 1: 3.5mm 1/8inch TRRS (4-Pole) Male jack, Connectors 2: AV 4-Pin Screw Terminal Block jack2. 3.5mm Screw Terminal Block Cable connecting single wires with open cable heads to your 3.5mm jack.3. 3.5mm trrs jack cable has four total conductors-three signal and a ground as opposed to a more common stereo jack'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 headProduct terminal: 4P terminalProduct wiring method: solder-free, terminal screws are fixed.Product applicable equipment: Audio 3.5mm interface audio and video equipmentFunction: The audio cable can be connected from the outside to transmit and expand the audio signal.colour:BlackMaterial: coppersize:30cmPackage Contents:1 x Adapter cableOnly 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.