XIANQI Replacement Dual Flush Push Button For Toilet Cistern Universal Features: Can meet the daily use in general. High-grade mirror double press type toilet button. Disassembly, easy installation, simple structure and is not easy to damage. Apply to all kinds of toilet tank top button. Color: silver 38MM: Suitable for toilet water tanks with a diameter of 38-45MM for the installation opening of the water tank cover. 1. Measure the button hole diameter and select the corresponding button . Measure the height between the button hole and the drain valve switch (You can directly measure the diameter on the button with the original button) 3. Measure the height of the button, and mark the height according to the previous measurement 4. Crop as marked 5. Install the button 6. Installation is complete Material: PP Package included: 1 x Toilet Flush Button