I've had my current impact bit set for a few years now, and it's starting to get worn out. The magnets get filled with shavings and the bits start to break. Thus, it's high time for an upgrade. I've been a fan of Milwaukee tools for a while now, and their stuff is solid.
While I do own quite a solid set of sockets, they're really only for hand use. If I dared to use them with my impact driver, there's a pretty solid chance it could shatter and cause some damage. That's why I'm wishing for these impact rated sockets - it's in the name. These sockets are hardened so that they can handle the impact load safely. I plan to get into some more vehicle maintenance stuff so this would be a welcome addition to my capabilities.