This is a Crouse Hinds ECLK618.  2" x 18" explosion proof flex fitting.  It is brand new.    It is equal to Appleton EXLK618.   

I also have most other sizes in my store.  Check my feedback and buy with confidence.  We have been in business for 30+ years.  As with all my listings, your satisfaction is guaranteed.  I can ship same day ups if the order is received before 3:00 pm central.  Check my store for more fittings or contact me for items not listed.