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I'm very new at drilling stuff and I have never drilled a hole in my life before. I need to drill through concrete (I don't know what kind of concrete it is), and I'm wondering if the following drill bit is good for the task.


Also, will the type of hand drill matter when you are drilling through concrete?

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How deep, how many holes, and for what purpose? – Bryce May 22 '12 at 7:07
@Bryce three holes, at least good 3 inches (I think), and it's for an air conditioner mounting bracket – Ichiro May 22 '12 at 14:26
up vote 4 down vote accepted

Absolutely that will drill through concrete but you will need a SDS hammer drill which the typical home owner does not have. This is the type of drill http://www.jccayer.com/product.php?productid=1169

For such a small hole you can use a regular rotary pistol grip hammer drill with a cheap Canadian tire masonry bit to do your holes.

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You can rent hammer drills, not sure if the rental comes with a bit or they make you buy that separate. For smaller masonry holes (5/32" would be small for me), you can get a higher end cordless drill with a hammer setting. – BMitch May 22 '12 at 2:59
He'll need an SDS Plus hammer drill. The SDS shank comes in 4 configurations. – Tester101 May 22 '12 at 11:55

For a couple of holes that are less than 1/4", I'd try a cordless drill with a hammer setting. I've got this DeWalt in my personal collection. When you start doing a lot of holes, get in the 1/2" or larger size, particularly if they are fairly deep and the concrete is very dense, then I'd rent a higher end corded power tool.

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If you have just a few holes, you're better off with something like the Vermont American 14014 rotary 5/32" bit, which can drill 2" deep. It will be somewhat slower than the SDS and hammer drill bits, but you can use a regular rotary drill. Just take your time, and blow out the dust periodically.

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