... be customized4.wonderful quality, reasonable priceMaterial :1,Inner conductor: beryllium bronze plating: gold plated2,Outer conductor: brass plating: gold plated3,Insulator: polytef / teflonElectrical ... -18GHz3,operating voltage500V4,characteristic impedance 50Ω5,Contact Resistance : inner conductor≤3mΩ outer conductor≤2mΩ6,insulation resistance≥5000MΩ7,Dielectric Withstand: 1000V ...