Increases clearance at the hub bearing seat during disassembly of the shock absorber strut with a spherical hub bearing seat, enabling easier separation and reducing the risk of damage. Also increases clearance for disassembly of the spring strut with a spherical hub bearing seat, broadening applicability. Output produces a parallel surface for accurate alignment during service. Expansion Range 5.0-11.5 mm provides flexible fit for different hub bearing seat tolerances. Compatibility: designed for use with shock absorber struts and spherical hub bearing seats. Performance: delivers controlled clearance to support safe, efficient disassembly and reassembly. Use scenarios - Vehicle suspension service: when replacing hub bearings where extra clearance is needed to separate components without damage. - Shock absorber or strut replacement: facilitates disassembly by increasing clearance between the hub bearing seat and connected components. - Suspension maintenance and alignment: ensures a parallel contact surface during reassembly for proper fit and alignment.