350720B * 3-1/8″ EIA Male to 7/8″ EIA Male Step Reducer w/ 3-1/8″ & 7/8″ Inner Connectors, Anchor Insulators, Hardware Kits & O-Rings

350720B * 3-1/8″ EIA Male to 7/8″ EIA Male Step Reducer w/ 3-1/8″ & 7/8″ Inner Connectors, Anchor Insulators, Hardware Kits & O-Rings

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

350720D * 3-1/8″ EIA Female to 7/8″ EIA Female Step Reducer w/ 7/8″ Hardware Kit & O-Ring