The TOTO Drake II and Vespin II, 1.28 GPF Auto Flush Compatible Toilet Tank is designed for use with the Drake II or Vespin II bowl. The Drake II and Vespin II features TOTO's TORNADO FLUSH, a hole-free rim design with dual-nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently. This version of the tank comes equipped with a left-hand chrome trip lever. This tank model offers hands-free, auto flush compatibility when used with the compataible T40 WASHLET+ Ready bowl and WASHLET electronic bidet seat. The Drake II and Vespin II meets the standards for EPA WaterSense®, and California’s CEC and CALGreen requirements. The Drake II and Vespin II tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. 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 ST454E tank is designed to be used with Drake II and Vespin II bowls only.