Ultra-fine atomizing brass hex nozzles with a stainless steel insert that can be hand tightened.  Includes an o-ring that seals the threads. The nozzle is designed with a ball and spring to stop the flow of mist/drips when the water source is shut off. The nozzle can be disassembled for easy cleaning. Ideal for use in humid climates. This nozzle is easy to clean - simply soak in white vinegar for 30 minutes if it ever clogs.  Expect years of beautiful misting from this nozzle.  Orifice size:  0.008 inches (0.2 mm).