The Luxury Jet Internal is held in by a internal circular clip instead of threading in like most jets.
These jet internals have two seal gaskets encircling the internal between the air and water inlets on the side, the older versions of these jets have a black o-ring instead of the seal ring gasket.
Luxury Jet High Flow Spa Jet Internal Features:
This jet internal is part of the Luxury Spa Jet series. All the Luxury Jet internals are interchangeable, so you can "mix and match" them.
This jet has a single water outlet. This jet has a comfort adjustment as well, when you rotate the front face of the jet you can adjust the amount of water let into the jet.