Wired Home 3106BF0Y RG-6/U Quad Shield Copper Clad 500 ft. The preferred A/V cable for inhospitable environments Four layers of shielding reject EM and RF interference 18 AWG copper-clad steel center conductor for maximum durability and signal purity Great for creating custom length A/V cables UL, C-UL listed, and CMG rated to meet applicable standards