Originally Posted by
SJX426

I will be curious about how hard this particular tool is. Hence the 8 drill bits.
Lots of oil.
Just realized you will probably take the wrench apart to drill it. I would be inclined to make a pilot hole with a burr, it would get through some of the hardening first.
I would also grind the opposing side in a curve or notch as the locknut is going to want to cam out no matter what.
Very interested to see how this goes.