I'm wondering if they're sturdy enough to create a hole in a stainless steel sink. I'm not sure of the gauge. It's not the lightweight super-thin junk you find at home centers for $50, but it's not commercial, either. I'd hate to ruin either the sink or the tools.
I'm not squeamish, and I'm reasonably sure this will get the job done, but if anyone knows (maybe the hard way) why I shouldn't try this, please chime in.