I cannot recommend the tonepros loking studs, they are very awkward to adjust once the bridge is under tension. The Wilkinson ones are much better. To adjust the tonepros you have to use a little spanner that they give you on a rounded corner square. The top slot only tightens the stud to the bridge.
I have TonePros studs on most of my guitars with wraptail bridges. I agree that they're quite tricky to set up - once they're tightened you can't change the height or intonation. I also ended up damaging the slots on a couple of pairs by trying to over-tighten.
But since I don't really believe the claim that they dramatically improve sustain, now I mostly use them just to stop the bridges tilting forward. So I do the studs up quite loosely, set the height and intonation, loosen the strings again and tighten the studs just a
little more with a thick plastic plectrum. It's enough to (a)stop the tilt and (b)stop the bridge falling off.
I also have several of the TonePros T-O-Ms. Having a bridge that doesn't fall off when you change strings is nice, but if you're buying them expecting a
big change in tone and sustain you'll be disappointed. There
may be a difference, but it's not much.
If you just want a new T-O-M bridge, it's worth considering the equivalent Gotoh models, which are identical to the TonePros apart from the grub screws - and about half the price.