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 Turbo Swirl Spa Jet Internal Features:

• Textured Plastic Jet Face with Finger Grip Scallops.
• Front face diameter of approximately 3-1/2".
• Designed to go through a 2-5/8" hole in the spa shell.

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.