The HYR451T combines two products that will increase your toilet’s efficiency and save water and money. No leaky flapper, tangled chain or handle that has to be jiggled. The Total Repair Dual Flush Valve quickly and easily converts most standard 2-piece toilets 1.6 GPF and higher into a two-handle, dual flush toilet. It works with standard 2 inch flush toilets. The short center lever is the Quick Flush setting that uses significantly lower water volumes for liquids and paper – the setting needed 4 out of 5 times. The second complete push lever at end is the Full Flush that uses the normal amount of water for solids. Designed for drop-in installation, the HYR451T can be installed without tools and without having to remove the tank. The Total Repair Kit can be calibrated to adjust the exact amount of water needed and detects leaks. The HYR451T combines two products that together will increase your toilet’s efficiency: HYR271T Dual Flush Valve and HC630T HydroClean Fill Valve.