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.