Shielded, 3 conductor cable. White jacket, white/white-blue/white-black AWG 22. Mil spec wire- M27500-22TG3T14. Great for running audio signals to audio panel, wiring intercoms, and for serial interconnect wiring between components. Manufactured by Harbour. Pricing and quantity sold is by the foot. Lengths of 250ft or less will be shipped rolled up, with no spool.
Image shown is of two conductor version of the same cable.