Use this Nozzle reducer to convert your older lamp to fit a modern standard-sized finial. Simply screw the 1/8 IP female end over your existing (3/8" inch outside diameter rod) then screw into your 1/4"- 27M male end (1/4" outside diameter) into your standard sized threaded finial. Reducer adapter is made from solid brass for years of use.  Brass Finish. 3/4" Height, 10/16" Base Width Designed for older lamp harps that have a wider threaded rod connector (This threaded rod is called 1/8" IP which is the most common threaded rod size used in many light fixtures.  If the outside diameter of your threaded rod is 3/8", then this is the adapter you need if you want to use a standard finial that is cut with 1/4"-27 threads.  95% of finials sold today use this size fitting. Accepts standard 1/4-27 threaded finials SKU: 75360