Repair or design your very own audio cables with these nice and durable phono-jack connectors. This is a great plug to make your own cable with. it's made out of durable metal with a flexible, sturdy spring for strain-relief. Just solder the connector to some wires and you have a DIY audio cable that can rival the best!This item is a 3.5mm TRRS Plug with four poles. TRRS stands for Tip, Ring, Ring, Sleeve. It has four total conductors - three signal and a ground as opposed to a more common stereo jack's two. This connector is most often used in smartphones & cellphones to provide stereo audio and one mic channel. https://elecena.pl/product/17499487/3-5mm-1-8-diy-4-pole-trrs-plug 2021-04-06 https://elecena.pl/product/17499487/3-5mm-1-8-diy-4-pole-trrs-plug 2022-04-27