This coordinated repair set replaces the key operating, fastening and sealing components inside a compatible North American two-piece toilet tank. It combines a 3-inch outlet single-flush valve, a height-adjustable fill valve with a 15/16-14 NPSM bottom inlet, a side-mounted trip lever, stainless steel tank bolts and a tank-to-bowl sealing gasket—giving plumbing buyers and maintenance teams one practical package for matched replacement work.