Performax no tank removal kit, fixes most common toilet problems while reducing repair time by 30 minutes, toilet fill valve is the quietest & most powerful solution to fix & upgrade your toilet, 2" valve repair kit that fixes common flush valve problems while giving the user the capability to optimize toilet performance while saving water & money, works with all 2" toilets including kohler, toto, american standard & more, not designed for 3" flush valve toilets.