F male twist on connector A)RG58/U,B)RG59/U, ... /Nickel plated Certificate: SGS,ROHs F male twist on connector, F plug , RF connector, RF coaxial connectors, F connectorsA)RG58/U,B)RG59 ... :Gold/Nickel plated Certificate: SGS,ROHs We produce BNC connector,F connector,UHF connector,if you are interesting,please feel free ...