Designed to be used when you have limited space above your keg.  Fits all 5/8 threaded Commercial Keg Couplers .

If you want to fit your kegs into a standard kegerator instead of a home made one in a standard fridge or chest freezer you will likely need one of these. A-type kegs especially come in 2 heights and the taller one will not fit into a kegerator without this angle fitting on the liquid post so it sticks out to the side rather than upright..