Packing List: The toilet flush system replacement kit includes 1 flush valve, 1 mounting screw, 1 push button, 1 foam adhesive, and 1 high-pressure water inlet pipe. The complete set includes all the necessary accessories, saving you the cost and hassle of purchasing them separately. Sturdy and Durable: The toilet cistern flush parts feature a scientific combination of a high-quality plastic main body and a pure copper bottom connector. The pure copper bottom connector can withstand the humid bathroom environment, resisting aging and damage. Dual Flush Design: The cistern fill valve has a dual flush function, which can adjust the full flush volume and partial flush volume. It controls water usage on demand, effectively reducing water waste and offering strong practicality. Safe Design: The copper water inlet valve adopts an anti-siphon design with a built-in check valve to prevent toilet water from backflowing and avoid drinking water pollution. It also comes with a high density, ensuring water safety and cleaning. Easy to Install: Designed for hassle-free installation, this toilet flush system replacement fits most standard toilet tanks. Even if you have no installation experience, you can easily complete the installation., Weight: 1.212542441 pounds, Manufacturer: QHDYSZ