Belden 1694A RG-6/U Coaxial Cable for Audio and Video 18 AWG Copper Conductor 75 Ohm 500 ft. USA 75 ohm nominal impedance is ideal for audio and video 95% coverage tinned copper braid combined with Duofoil foil/poly/foil 100% shield 18 AWG 0.040&quot; bare copper conductor Popular choice for custom audio interconnects