Buchanan Rubber HAM100-400CR-SET FIG 100 Crimplok Hammer Union, 4 in MNPT x 4 in FNPT, Steel

Buchanan Rubber FIG 100 Crimplok Hammer Union, Connection Size 1: 4 in, Connection Type 1: MNPT, Connection Size 2: 4 in, Connection Type 2: FNPT, Steel, #4-8 Thread