This Drake® II 1.0 GPF Toilet Tank is designed for use with the Drake II or Vespin II 1G bowl. It 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 right-hand chrome trip lever. It 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.