The Korky Large 3-in. Complete Toilet Repair Kit allows for a full toilet overhaul in one trip. Designed to fit newer Het toilets, this kit features a large 3-in. flush valve and fixes no-refill, slow refilling, running, and noisy toilets. The included flapper is a universal design to fit most brands and features a wide range of adjustability to fit toilets made after the year 2000. The 5010 kit does not fit Kohler toilets.