The Aero Mist 3/8 in. Brass Union with Nozzle comes with a 0.014 in. orifice medium-fine nozzle. This 3-piece fitting is compatible with 3/8 in. nylon or copper tubing and ideal for applications requiring custom nozzle locations. It is made of brass with a stainless-steel insert and can be used in high- or low-pressure systems up to 1,000 psi.