Lincoln® High-Pressure Straight Swivel, Connection Type 1: NPT, Gender 1: Male, Connection Size 1: 1/2 in, Thread Size 1: 1/2-27, Connection Type 2: NPT, Gender 2: Male, Connection Size 2: 1/4 in, Thread Size 2: 1/4-18, 5000 psi, Material Construction: Steel