HydroRight HYR460 Total Toilet Repair Kit with Dual Flush Converter. The HYR460 is a genuine product manufactured by HYR460. This particular product is a Toilet Repair Kit which combines two HydroRight products into one (HYR270 and HC660). This kit will turn the common single setting flush toilet into a "Dual Flush" operation. The dual flush features two buttons that use a set amount of water for flushing. There is one button for liquids and another when flushing solids. Five Year Manufacturer Warranty.