Authority: Comes with cUPC certificate, compliant with US and Canadian regulations and standards. More standardized and safer, with guaranteed performance. Standardization: The drain plug is suitable for standard 3-1/2 inch sink drain holes. Please measure before purchasing to ensure compatibility with existing pipelines. Easy to install: The kitchen sink drainage filter comes with a 1-1/2 "locking nut for easy installation. The locking nut is made of plastic to prevent corrosion. Easy to use: The detachable independent stainless steel filter screen can be used as a sink filter and water stopper as needed. Lift or lower it up to quickly drain or store water. The filter screen can prevent debris from blocking the drainage pipe, and simply remove it to remove the residue, making it easy to clean. Durability: The kitchen sink drainage filter set is made of high-quality material, which is durable, reliable, rust proof, corrosion-resistant, and leak free. Upgrade your sink hardware with Nicmondo standard 3-1/2 inch sink drain assembly, and have UCPC certification for greater standardization. It is more compatible with your kitchen sink, making installation and performance worry free and reliable. Humanized in use, the built-in filter can quickly drain or store water, and easily remove cleaning residues. Multiple color options can light up your kitchen design and bring a happy and joyful life.