Universal Kitchen Sink Strainer: Designed to fit standard American 3-1/2 inch drain holes, compatible with openings ranging from 2.95 to 3.42 inches in diameter and a depth greater than 1.7 inches. This kitchen sink drain has been tested to meet universal American standards. Please measure your sink before purchasing. Easy Use & Service: The kitchen sink strainer requires no installation. Simply place it into the drain hole to enable water retention and drainage with a simple press. For any inquiries, feel free to reach out. Upgraded 3-in-1 Kitchen Sink Drain Strainer: Combines a sink strainer, stopper, and odor barrier. Press the eject button to hold water for washing, press again to drain. Effectively prevents food scraps from entering the drain, serving as a reliable anti-clogging solution for kitchen sinks. Anti-Clogging Strainer Basket: Constructed from high-quality 304 stainless steel for durability. Features an upgraded brass pop-up core design to help prevent clogs. Efficiently filters food residue without blocking the strainer holes, making waste cleanup easier and keeping hands clean. Fast Drainage & Odor Prevention: Equipped with large perimeter drainage holes to enhance water flow and reduce draining time. Multiple rubber gaskets provide effective sealing against odors, backflow, and leaks from the sewer system, helping maintain a clean and fresh kitchen environment.