KOHLER K-7161-AF-CP Clearflo 1-1/2-Inch Adjustable Pop-Up Drain, Polished Chrome
The Clearflo adjustable trip lever pop-up drain works perfectly with 17-Inch - 24-Inch deep baths.  You can depend on solid brass construction for durability and reliability and KOHLER finishes resist corrosion and tarnishing, exceeding industry durability standards over two times.  Installation flexibility is ensured with above- or through-the-floor options.