Fluidmaster k-540a-015 3" toilet flush valve repair kit includes a toilet wrench to make installation as simple as possible. this kit is made specifically to fit high efficiency toilets (het) with a 3 inch flush valve. the flush valve height adjusts up or down to fit more toilet models and sizes, while the 3 inches flapper also adjusts to optimize performance and fine-tune how much water you use. this toilet kit includes all you need to restore your toilets flush. parts include: an adjustable flush valve, a 3 inches flapper, a gasket, a toilet tool, bolts, washers and nuts for a complete repair. this universal repair kit fits most common 3 inches flush valves.