S-GEV 4 LL/1/8 NPT Stainless Steel Union Fitting.
S-WEV 4LL/ 1/8 NPT Stainless Steel Union Fitting.
GES 4 LL/1/8 NPT Stainless Steel Union Stud.
WES 4LL/ 1/8 NPT Stainless Steel Union Stud.