southwire 500-ft 10-awg stranded black copper thhn wire by-the-roll southwire 500-ft 8-awg stranded black copper thhn wire by-the-roll southwire 500 ft. blue 23/4 solid cu cat6 cmr riser data cable southwire 500 ft southwire 500ft. blue 23/4 solid cu cat 6 cmr southwire 500-ft 12-awg solid black copper thhn wire by-the-roll southwire 500-ft 14-awg brown stranded copper thhn wire southwire 500 southwire 500-ft 18 rg6-quad shield black coaxial cable by-the-roll southwire 500-ft 6-awg stranded black copper thhn wire by-the-roll