EASY AND INSTALL: The flush valve kit includes a flush valve and a top knob, comes with installation instructions, easy to install, no plumbers or tools required, can be easily installed in 10 minutes, save your time and energy, let your toilet resume a powerful flush. (Please check your toilet tank size matches our product before purchasing) Compatibility: Suitable for: Fits most 2 inch separate toilets with top buttons, our flush valve also fits 38mm toilet top buttons, so you don't need to buy a new toilet top button, quickly repair your toilet and give your toilet a new look. Two Modes: The dual flush toilet valve offers two modes, you can use full flush or partial flush, partial flush can save water and reduce unnecessary expenses, full flush mode can thoroughly clean your toilet, the two modes can be freely selected according to your needs. High-quality materials: The toilet flush valve and toilet button are made of high-quality ABS material to ensure normal operation under