1 "NPSH heavy-duty industrial fire hose nozzle fire equipment Material: heavy duty brass Size :1 inches,Threads:NPSH/NP Maximum operating pressure:100psi Approximate Gallons Per Minute: 75 GPM Adjust spray size: straight jet stream, fan fog mist spray and shutoff High Quality: The stem of fire nozzle is made by brass to make sure corrosion resistance and durable Applications: Watering for green house,garden,yard,orchard when you need high volume water output. Delivering water on fire fighter fireman applications to put out fires,cooling down,dust suppression. Adjustable spray size: Brass constant flow fog fire hose nozzle offers straight stream and fog by rotating the fire nozzle to control on and off Fitment: 1 inch NPSH/NPT fire hose nozzle is only connect to 1 inch NPSH/NPT standard Male thread 1" NPSH female side will only connect to a male 1" NPSH/NPT NOT for 1" NH/NST thread nozzle(it’s too small for your hose) NPT: National Pipe Tapered, NPSH: National Pipe Straight Hose