What is a coaxial cable? A definition from WhatIs.com
Digital Audio RCA Cable Premium Stereo RCA to RCA Coaxial SPDIF Cable Male Speaker Hifi Subwoofer Cable AV 0.5m 1m 2m 3m 5m|rca to rca|rca toto rca - AliExpress
RCA Flat Coax Extension Cable in the Coaxial Cables department at Lowes.com
CXT-1 17 VAtC.A coaxial cable
Zenith 3 ft. RG6 Coaxial Cable, White VG100306W - The Home Depot