If the Kershaw set you saw is their "pen" set with changeable tips, it should have the common sizes you'll need for most folders...
Actually, I bought the Kershaw pen set for around $8. It worked fine for changing around a couple of belt clips and slightly loosening a couple of pivot screws that were taking a long time to break in. Good fit, no rounding on both Kershaw and Benchmade knives, or the bits, but I'm sure they're cheap steel nonetheless and won't last long.
That being said, I thought about buying a set of Wiha and changing the scales on my Benchmade Bugout, but I watched a bunch of Youtube videos and changed my mind.
Seems there are two types of videos... those where the guy shows his stock knife, then proudly unpacks a set of new uranium/plutonium scales and says "There are hundreds of videos showing how to change scales so I won't do it here", then the video stops and cuts to his finished knife. Then there are those where the guy takes his time and shows which screws he removes and what size bit he's using, but every time her gets to replacing the pivot screw he has a problem, shuts off the video, fixes it offscreen and when he comes back his knife is finished.
I figure, if these knowledgeable knife guys can't change the scales without running into a problem, a klutz like me probably won't do any better. I'd hate to wind up with $200+ in loose knife parts and scales, so I guess it'll have to stay the way it is for now. Maybe there's an easy way to change the scales without having washers and blades fall out but I haven't seen one. I'm talking specifically about the Bugout now... it might be simpler with other knives.
Thanks for your input, I appreciate it.