Hayward SP1023 1-1/2-Inch FIP Inlet Return Fitting with Locknut and Gasket Inlet return fitting comes with gasket and locknut It is designed to fit on-ground and above ground swimming pools Gaskets and a fitting nut allow it be attached and sealed thru the pool wall and vinyl liner Front has 1-1/2-inch female threads for use with the eyeball fitting Back has 1-1/2-inch female threads for use with a hose fitting