3/4" Male NPT x 1/2" Female NPT Reducing Hex Bushing Fitting. Used for a variety of applications, not limited to grease, fuels, refrigeration, water, oil gas, and hydraulic systems. Working pressure of 1000 PSI. Temperature range of -65°F to 250°F (-53°C to 121°C). Meets the standards of ASA, ASME and SAE. Not deemed lead free. Not for use with potable water. Please Note: NPT Thread size is NOT determined by its outside thread diameter in inches. Please review our attached NPT sizing chart to cross reference NPT thread size to linear inches. Again, PLEASE VIEW OUR ATTACHED NPT SIZING CHART.