Hello:

I want to nail some wooden 2x4's to the interior concrete foundation in my
garage to hang some hooks from, for holding shovels, etc.

I have seen some special "concrete nails" which I'm told can be driven into
the concrete, and will hold well.

What I'm wondering is:

a. Will these rather large nails damage the concrete, or more importantly
tend to "crack" it ?

b. Do they really tend to hold well ? (I guess most of the load would be
in shear, rather than
tension tending to pull them out)

c. How deep into the concrete do I want to go ?

d. Any brands of better than others ?

Any thoughts on this would be most appreciated.

Thanks,
Bob