If you use something with prior damage, your nuts are always toast
Seriously though......
They are new bits, they have some name like 'power forge', and are made of a much harder steel than the old Lisle bits.
The old lisle bits are painted, and after the first use the paint chips off, and they are no longer a tight fit. The second use the points start to bend over and after 1 set of CV's, they are all but useless.
My new one has done the pressure plate (twice, with the same bolts too
), and 2 sets of CV's. I am very impressed with it, and it shows no signs at all of rounding or damage so far. It is very nice because it has a 6" long head, so the base of the bit does not hit the wide part of the CV joint, allowing you to get on them much better. It is just short enough to work on the inner CV joints as well.
I even went as far as to buy a nice one from a local VW shop in the past, and for $12 it was toast after doing 1 set of CV's only.