Infinity Megastore Aurora Rising Dragon Spa Jet - 3" Quantum (Stainless) - Spa Jets
Note that there are various jet faces with the same internal parts, but only the Stainless Steel versions are available. They will fit all spas with the same jet body.
Commong on Infinity Megastore Aurora spas and other Chinese spas. Also found in some Spa Industries spas.
Measures approx 86mm across the face.