The Fluidmaster 400ARHRFCS PerforMax Kit for 2" Flush is the premium solution to repair your toilet at the most common leak points! This kit works with all 2” toilets including Kohler®, Toto® and American Standard®. PerforMAX® products provide optimal performance while saving water and money. Built-in Microban® fights flapper breakdown due to bacteria. Chlorine and hard water resistant. Solid frame flapper for ultimate reliability – no twisting and best seal every time and eliminates ghost flushing. Click Seal® Connectors reduce risk of overtightening – clicks when proper seal is made. Length of connector is 12 inches. Anti-siphon operation, code approved.