Wait...did I hear you correctly? Those flush cutting knipex are hard enough to cut steel? Now, I need to buy them. I've been getting buy just getting the inexpensive "gate trimmers" from injection molding supply houses. They do copper ok, but if you hit anything hard then that, they are ready for the garbage. They are cheap though...like 5-10 bucks.
Look at the handle on the 5" versions.