Enhance Your Toilet's Performance: Fix a leaking toilet with 2-inch drain outlet and turn into a powerful flushing. Using together with fill valve & tank to bowl gasket and bolts will make your toilet flush like new again. Please note: fill valve, gasket and bolts kit are sold separately. Easy Installation & Adjustment: Easy installation without tools. Adjustable overflow tube to fit different tank heights(11.33"-15.27"), half and full water level adjusters to control water consumption.Endurable chrome ABS, fits dual flush toilet with 1.5" mounting hole on ceramic lid. Note: This toilet repair kit with 2-inch flush outlet and dual-flush button is for two-piece toilets only, not one-piece toilets. Before you place an order, please take a look at our product pictures for how to measure the size of the flush valve, no one likes return. Water-Saving: The 2 inches dual flush valve provides optional full flush for powerful flushing and half flush for water-saving flushing which reduces your bill. Serving US since 2002: has served the U.S. with quality and reliability toilet repair kits for over 20 years. If you ever have questions, our dedicated customer support team is always ready to help.