Fluidmaster introduces its Pro Series Flappers. Exclusively designed for plumbing professionals, Pro Series Flappers are built to last with Microban technology protection that actively inhibits bacteria growth that contributes to flapper breakdown. Made from high-quality rubber, Pro Series Flappers can stand up to the harshest water conditions. They feature an adjustable dial for maximum performance, water savings, and are chlorine and hard water resistant. Pro Series Flappers are designed with a solid frame for the best seal every time to eliminate any twisting. Also included is a 12-inch kink-free metal chain to ensure the user does not need to jiggle the handle to get the toilet to stop running. The complete line of flappers will fit 1.28, 1.6, 3.5+ GPF toilets on both 2- and 3-inch flush valves.