Anvil 8700123659, Malleable Iron Pipe Fitting, 90 Degree Elbow, 3/8" NPT Female, Black Finish 90-degree elbow for changing flow direction Female National Pipe Taper (NPT) threads for connecting male threaded pipes Made from malleable iron for use with gas, oil, and water applications National Pipe Taper (NPT) threads for creating tighter seals than straight threads Black finish helps resist rust in oil and gas applications