Reducer 6-1/8" Flanged Female to 3-1/8" Flanged Male. Includes 6-1/8'' hardware kit and o-ring. Includes 3-1/8'' hardware kit and o-ring. Includes 3-1/8'' anchor insulator(bullet). Does not include 6-1/8'' anchor insulators(bullets). 50 ohm.
618-50-RFF318FM