Jets from the Poly Jet range are around 107 mm long and have a 52 mm thread.
A jet has two parts:
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 Poly Jet jets, to change up the massage type or the look of your spa.
If you cannot find the jet you need, feel free to contact us (and to send us photos with the size of your jet, if possible) of the model you're looking for, and we'll try our best to find a compatible jet.