Description Toilet Flush Valve Gasket (4.1 inch x 2.6 inch) (104mm x 66mm) 104mm x 66mm 4.1 inch Outer Diameter x 2.6 inch Inner Diameter .4 inch or 10mm Tall Fits Flush Valves for Two Piece Toilets Wet Gasket Fits Flush Valves. FLUSH VALVE NOT INCLUDED