Flapper dials to adjust volume for a custom flush|Chlorine and hard water resistant|Kink-free chain|Longest lasting, easily adjusts to save water|2 in fits flush valve opening|Microban® technology are more resistant to premature deterioration than other flappers|Microban® additive operates on the cellular level to prevent uncontrolled growth of micro organisms that can damage the flapper|Built-in Microban® protection|Adjustable dials for maximum performance and water savings|Solid frame for the best seal every time with no twisting