Is there a drill bit that goes through metal?

Is there a drill bit that goes through metal?

Regular drill bits can't cut through steel, so you need a heavy-duty, hard drill bit to do the job. There are two types of drill bits that you can count on for metalworking projects: titanium and cobalt. Titanium drill bits are high-speed steel drill bits (HSS) that have a titanium oxide coating.May 18, 2011

What is the best drill bit to go through metal?

Cobalt drill bits

What type of drill bit is best for hardened steel?

cobalt bit

How do you remove a hardened steel bolt?

https://www.youtube.com/watch?v=1DHUzGC6_pg