The Toto® Drake® 1.6 gpf Toilet Tank with WASHLET®+ Auto Flush Compatibility is designed for use with compatible Drake® bowls. Compatible Drake® bowls feature Toto's TORNADO® flush®, a rimless, hole-free 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. The Drake® 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: compatible Drake® toilet bowl, wax ring, toilet mounting bolts, water supply lines and toilet seat.