Everflow BRRC0122-NL 1/2 x 3/8 Inch Lead Free Brass Reducing Coupling with Female National Pipe Taper Threaded Ends, Brass Construction, Higher Corrosion Resistance, Economical & Easy to Install Lead-Free Brass is Comparable in Strength To Stainless Steel and is More Corrosion Resistant. Brass Body Constructed Manufactured to standard ASTM B-584-06 for Lead-Free Quality Assurance Female National Pipe Taper (NPT) Threads on Both Ends for Connecting to Male Ends Certified to Meet NSF/ANSI 61-8 Standard for Quality Assurance.