Kohler Cater 33" x 22" Top Mount Undermount Single Bowl kitchen Sink Kit, K-RC21612 - Amazon.com
Amazon.com: KOHLER K-80085-1PC-NA TASK Kitchen Sink, 33" Top or Undermount Workstation Sink with 1 Hole Faucet and Double Bowl in Stainless Steel : Everything Else
KOHLER Kennon Neoroc Matte Grey Granite Composite 25 in. 1-Hole Single Bowl Drop-In/Undermount Kitchen Sink K-RH28003-1-CM4 - The Home Depot
KOHLER Cairn Undermount 33.5-in x 18.31-in Matte White Composite Single Bowl Kitchen Sink in the Kitchen Sinks department at Lowes.com