Maybe because you're looking at metric taps? Or maybe that's the diameter of the cut threads.
Either way, I'd just look for an inch die to be safe https://www.ebay.co.uk/itm/124469794032
And yeah it won't be easy. You'll want cutting fluid, a vice and a big die holder
Maybe because you're looking at metric taps? Or maybe that's the diameter of the cut threads.
Either way, I'd just look for an inch die to be safe
https://www.ebay.co.uk/itm/124469794032
And yeah it won't be easy. You'll want cutting fluid, a vice and a big die holder