Center Post for Tire Changer Tire changer frame adjusts to fit 18", 19" and 21" wheel sizes; frame legs are engraved with these measurements for quick and accurate adjustment, Quickest and easiest way to relieve tire bead pressure to allow multiple tire irons to be inserted when changing mousse bib foam tubes, Tire can be pushed off rim using the bead breaker tool after a portion of the tire bead has been removed from the rim, Includes compact heavy-duty storage bag with carry handles for easy transport; bag size is 27" x 10" x 8", Bead breaker tool is also great for breaking beads on offroad tires with inflatable inner tubes, Used to change tires with mousse bib tubes or tires with standard inflatable tubes, Wheel rests at a comfortable working height