... plated,Ni-plated.5.Color:black ,blue.Cable of using usually specification :1.1C+S,2C+S ,2C+D2.Wire:26AWG,28AWG,30AWG3 ... ,etc.7.Length: 0.3mm-25m (for optional)8.OD:2.5-4.0mm(for optional).Quality :1.100% open or short ... ΩMax5.ROHS or REACH. 3.5mm stereo plug to jack av cable