3/32 in. Cobalt Thunderbolt Twist Drill Bit

Yes.

Should be fine. As a matter of fact I believe that most if these drill bits are mostly intended to be use in wood and aluminum as a matter of practicality; anything else is a matter of you get what you pay for.

It appears that these bits are titanium coated but they are not even hardened to minimum hardness standards. As for the high speed part they overheat using cutting oil.

It would not drill through a Barclay Forge stainless steel meat cleaver, I pushed down so hard the metal snapped in 2.

Don't believe they are made for drilling in brick. You should buy a special masonry bit.

Don't be rediculous. Ehen bbnit comes to drill bits an particular answer comes to mind. A good rule of thumb is as follows. Nog all drills are the same if you are using a self locking type of drill this kind of drill can only be used to a certain degree of treshold . What do I mean..they all have a limit by which the drill bit can be tighten so therefore your hand can only tighten the bit so much now if you use the one with the key you may be talking a different level of speed and strength given to the job that may be involved. That's what I mean. So perhaps this rule of thumb can be a little more helpfull. Still most drklls as well as drill bits can function within the range of 10 to 10 thousand RPM but it means nothing if the end user has no clue.

yes

I mounted a remodeling toilet flange because I added a 3/4" subfloor. I drilled the existing cast iron flange to mount the new flange. A 1/4" cobalt bit drilled the cast iron easily. You need to slow your drill spindle speed and let the bit do the work. Excessive feed force will snap a cobalt drill bit resulting in a broken bit stub stuck in the cast iron. Your project is very common and very "doable".

Length was about 4 inches.

No warranty.