Reliable function: relief valve with overflow With the simple click-clack function, it closes and opens in fractions of a second!You don't have to worry about the sink clogging and leaking sink stopper Material: POP-UP drain fitting uses high quality compression spring with good bounce and rebound resistance, chrome-plated and sturdy copper surface effectively prevents corrosion and rust, slows down the aging rate.The double seal can seal water quickly and prevent water leakage. Universal installation dimensions: The drain kit is suitable for sinks with/without overflow.Sink stopper with standard G1? connection, perfect for all standard sinks and vanity units. Easy installation: The sink valve with simple and practical accessories makes installation very easy!Just follow the steps in the installation guide. Easy to clean - simply unscrew the upper pressure cap of the drain pipe and clean it with a cloth.The clean and stylish sink drain faucet ensures that your family has a good mood all day long