Have a set of Crafsman tungsten based sae tap dies from the 1960's which are still strong. Have a set of Japanese metrics, black oxide, guessing high carbon steel-very good. Also have a really big Taiwan sourced set of metric taps dies . You read (sometimes ) that Taiwan stuff is better and I have generally found that true, but this set contained a mismarked die-pretty big as I recall. I had a set of H Frt black carbon dies once. When compared to the Japanese set and the "class fit" of random bolts/nuts they were simply not producing usable threads. Real junk. Today I looked for USmade stuff-hard to find, 3 times or more price, and sometimes weasel- worded "Made in US" ad. They are allowed to advertise US if so much content is US based-like packaging.
At H Frt I find most of the DrillMaster stuff is pretty good and I also got a set of Russian cobalt drills which are excellent. So it's kind of a crap shoot. Although some criticise Japanese tools, I prefer them to Chinese every time, and they too are pricey. We should start a thread on "good buy" starter tools for lawn mower repair and maintenance.