AC-90 steel armored cable is black striped color-coded. Flexible and efficient, no couplings or elbows needed. Copper conductors are THHN 90 degrees Celsius rated. 16AWG internal bonding wire and the outer armor form the grounding path. Anti-short bushings included. Permitted for branch circuits and feeders on both exposed and concealed work. Dry locations only. UL (Underwriter’s Laboratories) listed.