This listing is for a vintage Hubbell paddle switch light socket.  The threads on the bottom measure 3/8" across.  There are scuffs and scratches on this from light use or storage. The cardboard around the end socket is worn from use or storage also... but will not hurt anything. The switch turns fine. The piece does not look to have been used much.  The switch turns fine.  This is a nice piece from a nice estate.   Thanks for looking!