1. ** MATERIAL** The toilet tank knob is made of ABS material, known for its impact resistance and mechanical strength, ensuring durability even with frequent pressing and extending its service life. Additionally, it boasts abrasion resistance, maintaining a smooth surface over longterm use without easy wear. 2. **DUAL MODE** This replacement toilet tank knob features two flushing modes: half flush and full flush. The half flush is ideal for light waste or after urination, effectively conserving water, while the full flush is designed for heavy waste or solid excretions, ensuring thorough cleaning. This dualmode design caters to diverse needs while promoting water efficiency and environmental protection. 3. **EASY OPERATION** The dualflush buttons are intuitively designed with a medium size, making them easy to recognize and press. Both adults and children can operate them effortlessly without any complicated learning process. 4. **FINE WORKMANSHIP** Each handle in the dualflush toilet set is crafted with strict precision and finely polished to ensure smooth edges and flawless surfaces. The buttons are flat and even, reflecting build quality that enhances both aesthetics and reliability in daily use.