I've a couple of these and need a couple more. I searched the WWWorld over and only found this from LOWES but they are basically OUT OF STOCK and I do not need the bits, just the holders. It turns out that searching for "Hex Bit Holders" returns mostly those that you fit into the drill chuck so that you can 'quick change' bits without opening and closing the chuck. If anyone comes across a source for a pair of these, please let me know.