Our RG58A/U It features a 19 AWG, 50 Ohm coaxial cable use for RF applications. Suitable for indoor, outdoor, and aerial applications. It features a stranded bare copper conductor with a 95% bare copper braid shielding and a CM Rated PVC jacket. Due to its smaller size, it is more flexible and easier to pull through conduit. Outer Diameter: 5.0 mm.