Description 3/4 Male JIC (1-1/16-12) x 3/4 Male JIC (1-1/16-12) - Tube Union - Steel This item is a suitable alternative for the following: 478-240312, 842FS12X12, C5305X12, 842FS12I, 842FS12, 12MJ12MJ, 842FS-12X12