Description One Piece Toilet Flush Valve Gasket (3.3 inch x 2.5 inch) (84mm x 64mm) 84mm x 64mm 3.3 inch Outer Diameter x 2.5 inch Inner Diameter .38 inch or 10mm Tall Fits Flush Valves for One Piece Toilets Wet Gasket Fits Flush Valves. FLUSH VALVE NOT INCLUDED