Straight Adapter 1/4 MNPT x 1/8 FBSPP

Straight Adapter, Connection Size 1: 1/4-in, Connection Type 1: Male NPTF, Connection Size 2: 1/8-in, Connection Type 2: Female BSPP, Steel, Thread Size 1: 1/4-18, Thread Size 2: 1/8-28, 31-mm L