TIRE BEAD BREAKERS APPLICATION Designed to break narrow and wide body airplane tires without changing heavy adapter rings. This "RINGLESS" Bead Breaker allows the operator to chose the optimum diameter, for any tire size, by simply adjusting the ( 4 ) Spider Segments on each Pressure Plate. Includes "Multi-Aircraftl" Spider Assembly - NO more changing of heavy adapter rings for the different size airplane wheel/tire assemblies. Only a simple adjustment of the Spider Segments to the wheel/tire diameter is required.