Dual regulators and dual drain buttons provide adjustable water use and improve efficiency. The semifull and fullrow regulators offer water and energy savings, with an adjustable range that can save about 0.3 L to 1 L per flush. The dual drain buttons include full and half flush options for greater water efficiency. By sliding the adjuster on the white ABS toilet cistern flush valve, you can finetune water usage to match your needs. sealing for leak performance. The unit uses a sealing rubber ring with good elasticity, density and long life, delivering a reliable seal for the dualflush mechanism and minimizing the risk of leaks. Reliable locking mechanism. A stainless steel hook lock provides a stable locking force, anticorrosion properties, and strong resistance to breakage. Convenient and practical design. The hook lock combines strong locking force with corrosion resistance to prevent damage and ensure lasting operation. 23 practical use scenarios Residential bathrooms undergoing toilet updates to reduce water consumption and improve flushing efficiency. Small offices, hotels, or guest restrooms where reliable performance and water savings are important for operating costs. Bathroom renovations requiring durable, corrosionresistant hardware that can withstand frequent use and provide long service life.