JB Swivel Nut, 1/2 Inch, SAE Female Flared x Solder, Brass, -40 to 250 deg F, For Use With: R-12, R-22, R-134a, R-410A and R-502 Refrigerants, Includes: Cap and Valve Core Per Fitting
Standard/Approvals: ASTM C920, Type S, Grade NS, US. Federal Specification TT-S00230, Type II, Class A