I'm not a big fan of the Leatherman Core's design but I've got to say the drivers are excellent. Hollow ground and standard sizes! I got a chance to use it today and the difference is quite noticeable. I wish the Leatherman Wave had been updated with these drivers rather than the bit drivers.
I would rather abuse a bit than a multi tool..............They are cheap enough that if you bugger them up they can easily be replaced.Dave
But the problem has been with these Leatherman bit drivers is that they bit driver itself shatters under abuse because it is not as strong as a dedicated driver. So the multitool chassis itself is damaged in this instance.