16 AWG [0.051 in. (1.29 mm)] copper or copper cov ered steel center conductor; gas expanded polyethylene dielectric; inner shield aluminum-polypropylene-aluminum laminated tape with overlap bonded to dielectric; outer shield of 34 A WG aluminum or tinned copper wire braided shield; jacket of polyvinylchloride or polyethylene (flooded). Nominal O.D.0.318 in. (8.08 mm).