From the Manufacturer
This KOHLER stainless sink strainer with 1-1/2-Inch x 4-Inch tailpiece is removable and features solid brass construction for durability. Install it in sinks with 3-1/2-Inch or 4-Inch outlets. The open/close stopper seals tightly, making this strainer convenient and reliable.
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Sink strainer with 1-1/2-Inch x 4-Inch tailpiece
Solid brass construction for durability and reliability
For sink installations with 3-1/2-Inch or 4-Inch outlets
Removable stainless steel basket strainer with open/close stopper that seals tightly