This Mid Century antiqued golden bronze colored cast metal lamp part is a neck spacer to lengthen a table or hanging lamp. It's a little over 2 inches high with a 7/16" opening (just a shade under half an inch) and has an elegant tapered Acanthus leaves design. The last photo shows how it looks on a Hollywood Regency table lamp (the canopy cap below it is also for sale in my shop). In excellent condition with no wear or damage.