A socket, which is fixed on the spa's shell and connected to the water circulation system.
The jet itself, which fits into the socket.
Since all of the jets in this range have the same socket, you can freely interchange any two Cluster Jet jets, to change up the massage type or the look of your spa.
Do not confuse Waterway Cluster Jets with the jets made by CMP which have the same name, or with Waterway Cluster Storm jets! Even though their names are similar, these three jet ranges are completely different and are not interchangeable.