Anvil 8700131009, Malleable Iron Pipe Fitting, Hex Bushing, 1-1/4" NPT Male x 1" NPT Female, Galvanized Finish Hex bushing for connecting two pipes of different sizes Male National Pipe Taper (NPT) threads on the outside and female NPT threads on the inside for connecting different pipes Made from malleable iron for tensile strength NPT threads for creating tighter seals than straight threads Galvanized finish for corrosion resistance in water, steam, and air applications