For the tapping fluid used in this video. Anchorlube is available on Amazon.
https://www.amazon.com/Anchorlube-All-Purpose-Metalworking-Compound-8oz/dp/B098MPVTPM/?maas=maas_adg_28D9C38E7481A66E7A08A5F5C044A0A1_afap_abs&ref_=aa_maas&tag=maas
You can also find Anchorlube at these distributors. https://anchorlube.com/where-to-buy/
Here is the link to Newman Tools article. This is one of the best sources I've come across for learning about thread classes and limits. https://www.newmantools.com/taps/taptech.htm
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