Coupling Fitting; Type Reducing; Size A 3/8 Inch; Size B 5/16 Inch; End Connection Female Soldered x Female Soldered; Material UNS C12200 Copper; Material Specification ASTM B75; Process Wrot; Pressure Rating 700 PSI at 250 Deg F; Application Potable Water Supply System, HVAC/R System; Applicable Standard UL (Canada and US), ASME B16.15/B16.18/B16.22/B16.24/B16.50/B1.20.1, MSS SP-104, NSF 61G; Lead-Free