Kohler | Duostrainer Sink Strainer in Vibrant Stainless Keep your sink draining smoothly with this complete Duostrainer. The straining basket features an easy-to-use open/close stopper, while the body snugly fits into standard kitchen basins. Solid-brass construction for durability and reliability Width: 4.5 in. For sink installations with 3-1/2" or 4" outlets Removable basket strainer with open/close stopper that seals tightly