... Steel 2)Insulator:PE 3)Braid Material:Bare copper 4)Impedance:50 ohms Packaging&DeliveryPackaging ... or stranded,bare or tinned copper,or copper clad steel conductor.*PE,Transparent or foamed,or air-spaced PE insulator.*Aluminum mylar longitudinal shield is available.*Bare or tinned,or ... silver-coated copper wire single or double braid shield,more than ...