Bits for non-ferrous metals (anything that doesn't spark-aluminum and other alloys) have fewer flutes and are straight cut, not cross hatched. This is to help keep them clean. Most bits are for ferrous metals such as stainless, steel and other hard metal that spark. As was said, hard to clog any of them up if you lube them with wax. Yes, the small metal slivers are a bitch. I keep a razor blade and tweezers handy for the cleanup. You can try to use gloves, but they get in there too and trash them unless you tape them up when you put them on.
The Harbor Freight crap is just that. You get what you pay for, don't get me started. If you plan on hacking out one cylinder you may get it done with only the frustration factor of using inferior products.