3.5 mm male plug headphone audio connector soldering typePure copper gold plated structureYou can use this 3.5 mm headphone audio soldering jack to make any 3.5 mm cable by yourselfThese 3.5 mm Stereo TRS 3-Ring Plug Connectors are suitable for audio video application that require TRS Plug like cellphonesSuitable for the cable up to 6mm if your cable is too thin just use some sleeve to hold it properly to avoid the movementEasy to handle you really don't have to be a professional to do this. Just insert the cables in the hoops twist and lock in place and only then solder.