"The ESCO 70162 Ringmaster Tool installs and removes O-Rings on OTR tire assemblies. This tool pushes tire and ring assembly into place so you can install the O-ring and lock ring with little effort. Fully adjustable, works great on 3 piece and 5 piece wheels up to 30 in. Can be used on any and all makes of loaders, graders, highway, forestry, earthmover equipment and more.