It was time for new batteries for my Panasonic driver and as you know you might as well buy the whole kit as it isn't much more expensive. This time I picked up the little 12v impact driver. Sweet!! Anyway the impact tends to dent the driver bits so I don't want to use my magnetic bit holders. They are redundant anyway as the driver has it's own little chuck. I've found that 2" bits work for me but they aren't magnetized. This isn't a problem for Roberts screws but is a pain with anything else. Plus I use the magnet to pick up dropped screws etc. I remember seeing little magnetic rings that slide over the bits in some catalogue but now can't find them. Anybody remember which one? Magnetizing the bit alone isn't strong enough for anything but tiny screws.
And a heads up to anyone with one of these impact drivers. Pull the bit and check it frequently because the pounding will deform the base to the extent that it's hard to remove from the chuck. This applies especially to the two part bits with the hard tips. Like the ones McFeeley sells. (Note to the McFeeley person who monitors this list)
Mike