Yosemite Home Decor CSD1-1/2NO Pop-Up 1-1/2-Inch Drain for Round Copper Vessel Sinks with Overflow, 2-1/2-by-2-1/2-by-7-1/2-Inch, Copper,Yosemite Home Decor,CSD1.5NO" /> Drain size: 1.5-Inch Wash with soap and water only Copper is a natural antibacterial product so it is much more sanitary than most other sink materials