I didn't fix anything. There was nothing to fix. I just got the tools for the day when something breaks on my brand new, one month old, MacBook Air. Just getting ready for the future. I did the same thing with my 2008 aluminum unibody MacBook at the time. And, yes. I did use those tools often for upgrades, etc.
Although, these tools would have been very handy the day a few weeks ago when I tore apart my Samsung Notebook to get at its BIOS battery.