PREMIUM TOILET PERFORMANCE: Toilet fill valve and flapper repair kit fixes common toilet problems such as running, leaking, noisy, ghost flushing or weak flushingUNIVERSAL DESIGN: PerforMAX toilet fill valve adjusts easily from 10 – 15 inches and is ideal for use in 1.6 gallons per flush toiletsCORROSION RESISTANT: Chlorine and hard water resistant, PerforMAX 2-inch flapper features corrosion-resistant Microban material to prevent breakdown and leaks due to bacteria 7-YEAR WARRANTY: This product has a 7-year warranty DURABLE: Solid frame flapper eliminates twisting and ghost flushing for optimal performance