Fluidmaster 503 2-Inch Universal Sure-Fit Flexible Frame Flapper Flexible design  fits on flush valves with or without mounting ears Built-in Microban Works on most toilets Fits on flush valves with or without mounting ears 1-year warranty Note: This product is designed to fit toilets with 2 flush valves Works on most toilets Fits on flush valves with or without mounting ears 1-year warranty