Abstract: The invention is summarized as dampening device for high lift jacks. The dampener is a one-piece flexible member having two shafts: the first shaft for the I-beam of the high lift jack and the second shaft for the jack handle. The dampener slides over the I-beam and the jack handle respectively to snugly secure the jack handle to the I-beam. The dampener prevents the jack handle of a high lift jack from swinging and rattling against the I-beam when the high lift jack is not in use. The dampener can also be quickly and easily removed from the jack handle when the high lift jack is needed for use.