350700 * 3-1/8″ EIA Female to 1-5/8″ EIA Male Step Reducer, w/ 1-5/8″ Inner Connector, Anchor Insulator, Hardware Kit & O-Ring

350700 * 3-1/8″ EIA Female to 1-5/8″ EIA Male Step Reducer, w/ 1-5/8″ Inner Connector, Anchor Insulator, Hardware Kit & O-Ring

350704 * 3-1/8″ EIA Male to Type N Male Step Reducer w/ 3-1/8″ Inner Connector, Anchor Insulator, Hardware Kit & O-Ring