8AN Anodized T-6061 Aluminum Gold Straight Oil Line Fitting Adapter (3/8-18 UNF) Made of High Quality And Lightweight T-6061 Aluminum Material Anodized Finish for Strength and Durability 2-Way Heads for Both Male and Female Applications Fitting Diameter: AN-8 Inlet/ Outlet Sizes: 3/8-18 UNF