FillerSaver ADJUSTABLE TOILET BOWL FILL VALVE - CONSERVES WATER by reducing wasteful toilet bowl overfill. Universal design fits any toilet and INSTALLS IN MINUTES. Easiest and Most Inexpensive Way to Save on Wasted Flush Water Saves Up to 1/2 Gallon or More Per Flush - 4,000 Gals per Year Average Family No Compromises or Changes in Normal Flush Function - Install-Adjust-Forget Installs in Minutes with NO TOOLS - Simple Lever Adjustment No Hassle Money Back Guarantee if Not Completely Satisfied