A combination tool comprising a chuck key provided with at least one opening formed in the shaft thereof to receive therein a tool usually employed prior to the formation or following the formation of a hole in a structure. The chuck key is adapted to engage with the external teeth formed on one end of a chuck to either tighten or loosen the chuck on a tool such as a drill bit or the like. The tool carried by the shaft of the chuck key may comprise a punch, or a reamer, or a screw driver or the like.
