I have an International T6 crawler built about 1950 I use to maintain our road with a drag scraper. Was glad to get this rebuild kit. It is the correct kit with correct gaskets. Years ago the carb float needle valves were solid brass and worked great for years, but those were gone many rebuilds ago. The newer float needle valves are rubber tipped and with the current gas ethanol blend the rubber tips eventually develop a small ring and stick in the seat. I always shut off fuel and let the tractor run until the carburetor runs dry to shut it down and it helps extend the needle valve life. There are numbers on the carburetor body and the upper half ( throttle assembly) that can help in identifying the correct kit but I believe this kit will rebuild most International Harvester M, Super M, T6, carburetors. Surprisingly, Tractor Supply usually stocks this kit in their stores, but they were out locally so I ordered it online in the store.