The Fluidmasters K-400H-038 Universal 3 in. High Performance Everything Toilet Tank Repair Kit offers an all-in-one solution to repair your toilet fast but made specifically for 3 in. flush valve toilets. This complete toilet repair kit includes the PerforMax toilet fill valve, a high-performance fill valve featuring 2X greater refill rates than standard models, with ultra-quiet operation and adjustable bowl and tank water settings to customize your water use per flush. The adjustable 3 in. toilet flush valve changes height with a quick turn, no cutting required. Also featuring the adjustable 3 in. toilet flapper. Built to last featuring a durable silicone seal and water-saving adjustable dial design. The universal tank-to-bowl toilet gasket is made to fit most any 3 in. flush valve toilet, with a simple two-piece design. Quickly solve running, noisy or leaky toilet problems with one kit made to fit most toilet brands and provide the simplest install possible.