1-1/4in | 9/16-18 UNF 2B high pressure | Connector Block | G 1/2 B x 1/2 in. Male National Pipe Thread (MNPT) with 1/4 in. Female National Pipe Thread (FNPT) | Gasket x Gasket | MIP Threaded | Spigot x FIP | Sweat x FIP | Threaded MIP