ACCL 500ft Speaker Cable, Pure Copper, CM/Inwall rated, 16 AWG/2 Conductor, 65 Strand/0.16mm, Pullbox, WhiteThis white 16 AWG & 2 conductor Speaker cable is CM rated for in wall use, though it need not be used strictly in wall. It comes in a 500 foot pull box and is ideal for wiring the speakers in your home theater or house to your receiver. Each conductor (wire) is composed of 65 0. 16 mm strands made from pure copper which provides the optimal conductivity low resistance to drive high quality audio to your speakers.