Connectors with EIA 7/8” or EIA 1-5/8” flanges for 1/2”, 7/8”, 1-1/4” and 1-5/8” cables. The connectors are easy to install. Contact surfaces are silver plated to obtain a low contact resistance and very low intermodulation. Watertightness is achieved by using highquality o-rings. The straight coupling adapter (with O-ring and bolts), for mating two EIA interfaces together, is sold separately.