Standard Compatibility - The bathroom sink drain fits sink hole diameter of 1.6 - 1.96. Suitable for any bathroom vessel sink with overflow or without overflow. Please be sure to measure the drain hole of the sink before purchase. Anti-clogging and Anti-odor - The product is topped with an anti-clogging basket filter that collects hair and fines and keeps your sink drain from clogging. The interior is equipped with an anti-odor core to block the odor and deodorize effectively. High-quality Material - This product is a retractable flexible drain pipe Composed of ABS material. The pop-up drain stopper is constructed of thickened stainless steel. With the new upgrade design of the combination of the two, take a fresh look at your bathroom sink drain! Save Money - There is no need to use any additional tools to install this product, which is installed with bare hands. Take out the old bathroom sink drain and follow the installation picture to complete it. No Water Leakage - The pop-up drain kit has a thickened, silica-gel gasket ( At the junction of the drain plug and the drainer ). Please ensure the gaskets are in the correct position to avoid leakage (Refer to installation pictures instructions). If you have any questions about installation, please feel free to contact us.