An apparatus with: a handle, a bolt, a feature for attachment or storage of tools, two or more wedges, and an elastic belt that allow for hanging or storing tools and equipment on an extension ladder such that there is a maximal amount of surface contact and compression between an expanding clamp mechanism and the interior of a ladder rung. The apparatus can be configured in an almost infinite number of ways as desired by the user for length and features for attachment and it uses many off the shelf and easily obtainable components making repair and modification convenient for the user.