Master Bath Dual Push Flush Button Toilet Water Tank Flushing 58Mm Replaceable Round Button Lid Hole Should Be at Least 55mm, it provides flexibility in water usage. The smaller button is designed for liquid waste, delivering a reduced water volume flush, while the larger button is ideal for solid waste, providing a powerful full flush. This dual flush system not only saves water but also contributes to eco-friendly living and lowers your utility bills. The button is easily attached to the water tank lid, ensuring a secure fit. Its durable construction ensures long-lasting performance, allowing you to enjoy its functionality for years to come. Enjoy the convenience of dual flush options, save water, and contribute to a greener environment. With its sleek design and easy installation, this replacement round button is the perfect choice for enhancing your bathroom and improving your everyday toilet experience..