The Super Mounting Bar is not just like any other bar that you have sitting in the corner of your shop. We have this one specially made to add a teflon protector piece that touches your wheel. You will also notice that the shaft part of the bar itself is designed to provide leverage to mount the tire onto the wheel. Rather than trying to mount that first bead of the tire and struggling, our bar provides an easy on. The Super Mounting Bar is specifically used for 22.5s, 24.5s, and up.