These RG58 cables are bare copper commonly used for low-power signals, RF connections, Ham radio, Thinnet 10Base2, and more. This cable is rated for outdoor/aerial uses. Internally this cable is protected from RFI and EMI interference by a copper braid shield. The center conductor is made from 25 AWG solid copper. RG58 is commonly terminated with a BNC, N, TNC, or UHF connector. Outer Diameter: 5.0 mm.