Give us a call with any questions you have about your toilet problems, our experts are here to make your Toilet Flush Stronger. Vessini Opaz Flush Valve and Fill Valve Kit, by NuFlush.Flush Valve and Fill Valve replacement with all the Hardware. Compatible with 2-piece toilets with 2 in. And 2.5 inch Flush Holes. Includes a Extra H D Rubber Gasket and nylon bolts and Nuts With Rubber Washers for installation.