7/8″ 50 Ohm Dual Socket Swivel Flanged E.I.A. Line SectionThese Coaxial Dynamics Line Sections, with appropriate meter (portable or panel mount) and plug-in elements, form a complete system to measure power in 50-Ohm coaxial cable and 7/8″ transmission lines.Several different models are available in either single socket or dual socket with a wide variety of connector options. Dual socket line sections allow both forward and reflected power measurements using only one line section and a meter with a FWD/RFL switch, or a panel mount configuration with 2 meters.Your confidence in the quality and dependability of these Line Sections is assured with the Coaxial Dynamics Two Year Limited Warranty. Silver Plated For High Conductivity Low Insertion VSWR – 1.05:1 Max Uses Standard Gold Plated Plug-In Elements Rugged and Reliable Two Year Limited Warranty