PT Coupling Petroleum Handling Series TTF30NPTM Aluminum Cam and Groove Hose Fitting, Flange, 3" Flange x 3" NPT Male Suitable for connecting to hose that has NPT female end Flange at one end and NPT male threads at the other Aluminum for lighter weight and resistance to corrosion Suitable for use with water, hydraulic oil, coolants, gasoline, and petroleum products 100% Poured, Casted, and Machined in the U.S.A