Tube To Male Elbow 3/4" Tube X 3/4" NPT ISSD12ME12 Duolok This 316 Stainless Steel Male Elbow 3/4" NPT ISSD12ME12 Duolok has a Tube O.D. of 3/4" and a NPT of 3/4" Duolok ISSD16ME12 Features: 3/4" NPT Tube Fitting 3/4-14 Male Pipe Threading Elbow...