CATM1038 &ndash; SC-400-NM N-Male (Plug) Crimp/Knurled Coupling Nut 6ft RG/U-x-142 Jumper Cable, Amphenol, Times Microwave equivalent. Impedence: 50Ohms Teflon coating, silver plated copper braiding, copper core. N Male and N Male connectors. Dielectric Type: ST