Because of the valve, Fill Category Flapper, Valve and Sensor, Use TOTO, Fits TOTO, Brand Material Plastic, Color/Finish Black, Yes (1) Paint Valve (1) Refill Tube (1) Metal Refill Tube Clip (1) Mounting Nut (1) Conical Washer (1) Coupling Nut (1) and (1) Instructions.