Straight Adapter 3/8 FNPT x 3/4 MBSPT

Straight Adapter, Connection Size 1: 3/8 in, Connection Type 1: Female NPT, Connection Size 2: 3/4 In, Connection Type 2: Male BSPT, Material Construction: Steel, Thread Size 1: 3/8-18, Thread Size 2: 3/4-14