FAST AND EFFICIENT WATER FILLING: Effectively improve the overall performance of your toilet tank, resolving issues such as slow filling, leaks, noise, and continuous operation. Enjoy a quieter, faster, and more efficient user experience. QUIET AND WATER-SAVING: Enjoy a quiet bathroom environment with an efficient fill valve that optimizes the water supply system while quickly filling the tank, reducing your water bills. SELF-CLEANING DESIGN: Innovative self-cleaning function resists hard water deposits and mineral buildup, reduces clogs, and maintains a smooth water flow, eliminating the need for frequent cleaning. UNIVERSAL COMPATIBILITY: Compatible with most modern and older toilets, offering an adjustable height (8.66-12.20 inches) and water level range (5.91-9.45 inches), easily adapting to different models for convenient installation. LONG-LASTING DURABILITY: Made of high-quality material, it withstands various hard water conditions, resists aging during prolonged use, and reduces maintenance and replacement costs. Color: Black. Material: Plastic. Specifications: Plastic thread. Package Contents: 1 set of toilet fill valves. Dear Customer: When purchasing products from this store, you can enjoy the following privileges: 1. Free international shipping (if the goods meet the free shipping standard of the selling price). 2. Sufficient stock, welcome to place an order. 3. Free returns: You can return your order within 30 days of receiving it. 4. Your order will arrive within 10 to 15 days. 5. If you haven't received your product yet, please contact us for assistance. We will address your issue as soon as possible. Due to time zone differences, we may not be able to respond immediately; please be patient. Have a great day and happy shopping!