1)cable connectors 2)material: brass 3)with high quality 4)competitive price 5))good after service Electrical Performance1, Frequency Range DC~4GHz2, ... , Dielectric Withstanding Voltage 1500V r.m.s, at sea level.8, Insertion Loss 0.20dB @ 3GHz Max.9, RF Leakage ... nickel plated copper tubeOther information 1, Coupling: bayonet-lock 2, Durability: 500 mating 3, Temperature Range: -55 to +155 4, ...