Product Description Kit includes PerforMAX fill valve Model No. 400ARHR, SKU 400964; adjustable flapper Model No. 502P21, SKU 472980; 12" universal Click Seal toilet connector Model No. B1T12CS, SKU 401591; and 7/8" Ballcock x 1/2". Perfect for the consumer who doesn't know the size of their valve. From the Manufacturer The PerforMAX Toilet Fill Valve, Flapper and Connector Kit is designed to be a high-performance solution to upgrade your toilets performance and fix common toilet problems. The included PerforMAX Fill Valve is the is a quiet yet powerful fill valve, offering 2X greater refill rates, a water-saving roller clamp and EZ-twist adjustability. Solve common problems such as: noisy toilet, toilet turns on by itself, constant running or leaky toilet, toilet has weak or will not flush, slow filling toilet, or inadequate water in the toilet bowl. This toilet repair kit targets common leak points like the toilet connector, with a 12” length CLICK SEAL connector. Minimize cross threading and stripping, with no tools requires, simply twist and the audible “click” lets you know it’s sealed. Size adaptors are included to ensure a fit on most common water supply lines. Built to last the durable PerforMAX 2” toilet flapper, saves money with an adjustable water lever dial, a solid frame, and chlorine and hard water-resistant material build. This universal design works with all 2” flush valve toilets including Kohler, Toto and American Standard.