PT Coupling Special Application Series Ductile Iron Discharge and Suction Hose Fitting, Coupling, 2" Female Shank Suitable for connecting directly onto hose Plated ductile iron swivel nut and gasket for resistance to corrosion Swivel nut at one end and female hose shank at the other Ductile iron for greater flexibility than cast iron Suitable for use with sand, grout, cement, and other abrasives