Dual Flush Mechanism：This Toilet Tank Flush Valve is a Dual Flush Valve with two buttons for full or partial flush, making it a Flush Toilet Cistern Push Button Assembly that replaces old single-flush units Adjustable Height Design：Use this Toilet Tank Flush Valve as an Adjustable Toilet Flush Valve that extends from 7 to 10 inches, fitting most two-piece toilets where the toilet cistern flush valve sits above the overflow tube Fill Valve Integration：This Toilet Tank Flush Valve works alongside a toilet fill valve bottom entry, letting the toilet flush system replacement kit include both flush tower and refill components Complete Replacement Kit：As a toilet flush system replacement kit, this Toilet Tank Flush Valve comes with a flush valve gasket and mounting bolts, where the dual flush valve connects to the push button assembly without cutting existing supply lines Water Saving Operation：This water saving dual flush valve inside the Toilet Tank Flush Valve uses a smaller flush for liquid waste, while the toilet cistern flush valve opens fully for solids, Manufacturer: YGLEEULI