【Packing List】Toilet Flush System Replacement Parts, the water tank accessories set includes 1 drain valve, 1 fill valve, 1 switch button, 1 rubber ring, and 2 plastic screws. Please measure the size of the toilet yourself before purchasing! Applicable toilet tank height 21-25 cm, water tank bottom sealing port aperture 4.5-5.5 cm, toilet flush button diameter 7 cm! 【Dual Flush Design】The Toilet Cistern Flush Parts has a dual flush function, which can adjust the full flush volume and partial flush volume. It can be selected according to daily flushing needs, helping you reduce water consumption and contribute to environmental sustainability. 【Sturdy and Durable】This Cistern Flush Replacement is made of high-quality plastic and corrosion-resistant stainless steel, with excellent performance, strong toughness, wear resistance, high temperature resistance and corrosion resistance, and can maintain its function even after years of frequent use in the bathroom. 【Detailed Design】The Dual Toilet Flush Valve has an external black sealing ring and a built-in silicone white sealing ring, which is double leak-proof to ensure watertightness. Built-in check valve to prevent toilet water from backflowing and avoid drinking water contamination. 【Easy to Install】This Push Button Toilet Flush can be quickly and easily installed on your toilet. It is suitable for most toilets with tanks, including squat plastic tanks, and is an ideal choice for updating and maintaining old toilet tank accessories., Manufacturer: SRAMZ