Super MaxJax is a step forward in stabilizer dampening technology . Many stabilizers out today can be made better through the use of the new Maxjax. The new Maxjax can be slipped over almost any stabilizer out today to add extra stabilizing and dampening abilities. These fit comfortably on a 1" rod. You can stack them as well to reach forward weight needs. The outside dimension are 2 3/4" x 2 3/4", with arms that 1 1/4" long.