1. : The toilet flush button is made of ABS material with a chromeplated surface, offering an advanced and textured feel. It is suitable for wet environments, resistant to corrosion and aging, durable, and longlasting. 2. Double button design: The replacement toilet flush button features a dualbutton design for convenient use. The chromeplated surface adds a stylish and elegant touch, making it both beautiful and practical. 3. Universal ApplicationThe toilet button is compatible with most toilet flush systems on the market. Button outer diameter: 50mm / 1.97'; button thread: 38mm / 1.5'; inner hole diameter: 38 50mm / 1.5 1.97'. Please verify your toilet cover opening size before . 4. Easy to install: The adjustable flush toilet button can be installed effortlessly. No drilling or additional tools are needed—simply open the toilet lid, remove the old button, insert the dualbutton unit, tighten it, and it's ready to use.