Midland Metal 5406166 Hex Reducer Bushing, 1 in MPT x 3/8 in FPT, Steel

Hex Pipe Reducer Bushing, Connection Size 1: 1 in, Connection Type 1: Male NPTF, Connection Size 2: 3/8 in, Connection Type 2: Female NPTF, Steel, 1-11-1/2 x 3/8-18 Thread, 375 deg F