Abstract: A device for holding an elongated hand tool of a tradesman in close proximity to his area of work while he is working on an extension ladder having a plurality of hollow rungs. The device comprises a generally U-shaped mounting member having a base and a pair of outwardly-biasing, concave-shaped legs. The device also comprises a generally cylindrical section of piping which is adapted to hold an elongated hand tool. The section of piping and the base are preferably spaced apart by a spacer, which is curved at one end to lie flush against the side of the section of piping and is flat at the other end to lie flush against the base. The section of piping, the spacer, and the base are interconnected by an externally threaded bolt, which is secured in place by a lock washer and a nut. To mount the device in a hollow rung, the user squeezes together the outwardly biasing legs and inserts them into the hollow rung.