Lead Free Brass Pipe Fitting, Reducing Coupling, Class 125, 3/8" X 1/4" NPT Female Reducing coupling for connecting and extending pipes of different sizes Female National Pipe Taper (NPT) threads on both ends for connecting male pipes Made from lead-free brass for higher corrosion resistance than steel Relative softness of metal enables tighter seals and greater ease in installation Meets standards ASTM B-584-06 (C89833), ANSI B 1.20.1, and ANSI B 16.15 for quality assurance