The Adjustable 3" Flush Valve and Tank to Bowl Gasket Kit fits specific toilet models made after 1997. Quick and easy to install, the flush valve height easily adjusts from 7" to 11-1/2", with no tools or hack sawing required. The oversized tube and funnel reduce flood risk while the included premium flapper and tank to bowl gasket ensure a tight, leakproof fit. The kit fits most 3" 2piece toilet tanks, but does not fit any Kohler toilets. Easy to install, the 5030 includes: (1) Large 3" 4" Flush Valve, (1) Large Tank to Bowl Gasket, (1) Large 3" Premium Flapper, (1) Set of Hardware and (1) Instructions.