About This Fits Two-Piece Toilets Only: Specifically designed for two-piece toilets, compatible with standard toilet tanks using 3-inch or 2-inch flush outlets. Not for one-piece toilets. 3-Inch Flush Valve with 2-Inch Adapter: Designed as a 3-inch dual flush valve, includes a 2-inch adapter base to easily convert and fit 2-inch tank outlets, providing wider compatibility. Water-Saving Dual Flush Design: Dual flush system offers half and full flush options, helping reduce water usage without sacrificing flushing performance. Durable, Leak-Resistant & Easy to Install: Made from high-quality ABS materials, adjustable height design and clear installation steps allow quick setup without other tools. Serving U.S. since 2002: R&T has served the U.S. with quality and reliability toilet repair kits for over 20 years. If you ever have questions, our dedicated customer support team is always ready to help. Overview Material : Acrylonitrile Butadiene Styrene (ABS) Brand : R&T Item dimensions L x W x H : 10 x 2 x 2.7 inches Inlet Connection Size : 3 or 2 Inches Outlet Connection Size : 3 Inches Manufacturer : Xiamen R&T Plumbing Technology Co.,Ltd.