Took some trial and error to find the correct piece and amount of force to use on my particular (round) locking nuts. The kit includes *zero* instructions (Amazon, the product detail should be amended!). I watched a few YouTube videos on general locking lug nut removal and got an idea of what needed to happen. The first lug took the longest, after I got the hang of it, the pieces in the kit worked well.
I didn't use pneumatic tools. I used a 1/2" socket, extension and a breaker bar.