This cable is available in black and comes in lengths 20m,the center is made of high grade copper coated steel that has been swept to 3.0GHz ,making this great application for satellite,cables,wireless(including cell services),and communication uses.it can be able to be used on  long runs without the loss of signal or picture .we use high grade 360 degree compression connectors to ensure that this cable remains water and weather proof ,without the loss of any signal