A simple thumb driver which fits standard driver bits with recess for Harbor Freight Magnet. I've seen a few of these of somewhat similar design but none had a recess for a magnet to hold the bits which was important to me so I designed this little guy. This build has a recess that friction fits a Harbor Freight rare earth magnet which secures the bit. 1 magnet works fine, 2 really locks it in, the recess will fit up to 2 magnets