Patented mini-valve lets you adjust the amount of water directed to the bowl and can save over 3,000 gallons of water each year caused by overfilling the bowl Patented float lock allows you to make minor repairs in the tank without shutting off the water Positive locking allows you to make height adjustments with a simple 1/4 turn, without needing to remove the valve from the tank Exclusive Smart Nut locks valve into place without a wrench Thumb Screw allows float adjustment without getting your hands wet Patented TurboJet technology removes rust and sediment Detects leaks and helps prevent slime buildup on the flapper Adjusts to fit all brands