What does that do?

So my Hubby likes tools, like most men I know, so occasionally I check out tools at the store and online to see if there's some cool gadget he'd like. I thought I knew what the basic tools where, but I came across the term festool and had no idea what it was. I was searching through tools trying to figure out what the heck a "festool" was and what it did. LOL, turns out it's a German brand of power tools and they look pretty cool too.