Drill bits

I'm trying to drill a couple holes on my vac hose reels to raise my pressure hose reels cause it's sitting too low and it scrapes my almost new flooring, broke 4 drill bits with the first hole and the hole is not even a hole yet, lol.
What kind of drill bits are you suppose to use for metals and what brand last the longest, price doesn't really matter, I just don't want to have to go to home improvement store every couple of months to buy more drill bits.

I got your bits right here lol, just remind me next time we met up.

You are soppose to let the drill bit do the work not push it threw. And keep a little oil on the bit to keep it cool and don't use the highest speed setting on the drill.

These are my go to...I did a lot of manufacturing and spent a lot of money on bits.............

Cobalt drill bits are made from cobalt steel blended with a fairly large percentage of cobalt. The cobalt actually makes the drill bit incredibly hard, with an abrasion quality. Cobalt bits are also superior for their resistance to heat.
Cobalt bits are generally used for production drilling... Cobalt bits are specifically designed for drilling into hard, abrasive materials. They are good when used to drill into stainless steel, titanium and even cast iron.  
If you are going to repeatedly drill through steel and other metals, you may want to look at cobalt drill bits, which are cobalt all the way through and can be sharpened when needed.   

Titanium drill bits are a metal formulation of titanium nitride applied to "coating" a High Speed Steel drill bits. Titanium drill bits have incredible high surface hardness.  
Titanium drill bits also reduce the friction between the drill bit and the material being drilled through. Titanium bits are also ideal for cutting through metal. They will last roughly six times longer than standard drill bits.
Titanium drill bits have a higher hardness level typically than cobalt drill bits. However, the titanium is a coating on the drill bit, so you won’t be able to re-sharpen the drill bit and keep the titanium coating.

Both titanium bits and cobalt bits are more expensive than regular bits.  Cutting through or drilling holes into stainless steel is not something most people need to do with their household drill. So, in part, using titanium or cobalt bits depends on what type of task and how often you plan to use the drill bits. These can be brittle too, so remember to go slower with oil and let the bit work itself....you will be surprised how well knowing this works!

As Devon said, cobalt bits or a good quality titanium coated bits are the way to go.

Personally, I only use cobalt bits these days for metal. I bought a huge set of them a year ago and will never go back to other metals.

The other tip is technique. Start with a smaller bit than you need and then keep re-drilling your up in size until you reach the desired hole size. This works really well or else you can drill a small hole followed by a step bit, but they get dull pretty fast.

Thanks guys, I bought black oxide bits before I posted this yesterday and sure enough it got dull very quick, fortunately home depot was nice enough to do an exchange, I got titanium because cobalt wasn't available, it cuts through the reel like butter, I never know you're supposed to use oil on the bits, along with regular speed on the drill, works great, thanks again for all the tips

And the higher the rockwell... the stronger, but more brittle the metal becomes. The higher the rockwell the easier they cut holes....so find the range you like to play. They can chip fairly easy too...always! always! wear eye safety when using these harder bits....one whoopsie and it's an eye!

Yeah took forever to drill the holes in this TNT tank but slow and keeping oil on the bit and I got it done only had to sharpen the bit once so far still got 4 holes to go.

It is amazing what a difference some good cutting oil can do for jobs like that.

I had to drill 12 holes in my truck's frame rails to mount a trailer hitch last year. Without the cutting oil....all day and got nowhere. Used the oil and was done in about an hour.

That's some hard steel (spring steel ) plus using a hand held drill. Just time and effort right.

I third the use of lubricating oil and slower speed, you don't want to over heat the bit, or it seems to dual it real quick.

Even on aluminum, a bit can burn pretty easily at high rpm.