2-1/2" Cast Brass short shank couplings 4sets complete.
You get 4 female swivel ends and 4 male theaded ends. These have 2-1/2" NST thread also known as NH or fire hose thread.
These have pin lugs on the female swivels. gaskets included
They similar to Dixon brand PN BS93N
They are new and in perfect working order.
List price for one set is $138.60