Adjusts for maximum flush efficiencyFixes most common cause of a running toiletRigid frame aligns flapper properly on every flushMicro ban prevents growth of harmful microbesBuilt-in Microban fights flapper breakdown due to bacteria on the flapper itselfBest for 1.28 - 3.5 GPF+ toilets and Easy to installAdjustable for maximum performance and water savingsProduktbeschreibung Size :2 In. Product Description longest lasting water-saving toilet flapper for 2" flush valves works best in toilets with 1.28 - 3.5 gallons per flush or higher. The 502 is adjustable for optimum performance and water savings, is chlorine resistant, and has a solid frame for ultimate reliability. Flappers with a solid frame do not twist and provide the best seal. Replace or fix your toilet flapper with aoilet flapper. Universal Water Saving Long Life Toilet Flapper. Adjusts to save water. Chlorine-resistant material.