OTC's Six-Lug Tubular Spanner-Type Wrench removes and installs rear wheel bearing locknuts on heavy-duty axles. Rugged tool is designed for use with a 3/4 inch square-drive ratchet or breaker bar. Tool is NOT intended for use with impact tools - use with impact tools will void the socket. For use when servicing Chevrolet and GMC 5,200 to 7,200 lb. axles. Socket has a 2-5/8 inch O.D. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.