The Toto® Drake® II 1G® and Vespin® II 1G, 1.0 gpf Toilet Tank is designed for use with the Drake® II or Vespin® II 1G® bowl. The Drake® II and Vespin® II tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. The tank features Toto®'s industry leading 1G® technology, offering a powerful flush that flushes completely and fully with only one gallon of water. This version of the tank comes equipped with a left-hand chrome trip lever. The Drake® II and Vespin® II meets the standards for EPA WaterSense®, and California's CEC and CALGreen requirements. Additional items needed for installation and use must be purchased separately: toilet bowl, wax ring, toilet mounting bolts, water supply lines, and toilet seat. The Drake® II and Vespin® II ST453U tank can be used on the following bowls: C453CUFG, C453CUF, C454CUFG, C454CUF, CT474CUF, and CT474CUFG.