Whirlwind SK5 Series NL4 to NL4 Single Line Speaker Cable | Length: 25 feetSK5 Series cables are made with two conductor 12GA wire and terminated with an NL4 FC connector on each end. Whirlwind's single line speaker cables are the result of ongoing improvements in wire durability, weight, and size. Made with their specially designed connectors, these cables represent the industry standard for quality. Wiring is to 1+ and 1 pins of the NL4 connector. Cable length is 25 feet.