Custom Made Flapper Valve Assembly, Choose What You Want, Two Inch or Three, Soft Rubber Flapper Valve, Silicone Seal, Counterbalanced, Stay-a-float Flapper. And the Exact Length of Overflow Tube. Order 2 or 3 inch Flapper Valve Assembly with sliding adjustable overflow tube. Order any Flapper valve you need. Custom Made for your toilet needs. The more water you can put into your toilet the better it will flush. Most Flapper valves don't stay up long enough to let all the water out for a better flush. Order Three or Two inch flapper valve assembly with an adjustable sliding overflow tube