This is a Crouse Hinds CD2 conduit drain with 3/4″ threaded hub..  It is made of plated steel with a mesh screen.  I have them in 1/2″ also.  Call with any questions 815-726-4027.  Check my feedback and bid with confidence.  We have been in business for 20+ years.  As with all my listings, your satisfaction is guaranteed.  I can ship same day ups if the order is received before 3:30 pm central.  Check my store for more fittings or contact me for items not listed.