Features and Benefits: 3-1/4 6-point locknut socketWheel bearing locknuts are easy to remove or install with these specially designed socketsOTC wheel bearing locknut sockets are formed from high-strength steel that is resistant to rounding out under high torque loadsDesigned for use with 3/4 inch square-drive MANUAL tools onlyIncludes wheel bearing locknuts which are easy to remove or install with these specially designed socketsNOT intended for use with impact tools - use with impact tools will void the socket s warranty6 point 3-1/4 inch (flat to flat) opening size with 5 inch depth; to determine socket size needed measure locknut from flat to flatNot Included Related Product: OTC1908 is part of OTC9850 6-pt Wheel Bearing Locknut Sockets with Tool BoardNot included Related Product: OTC1908 is included in OTC9852 Wheel Bearing Locknut Sockets / boardLifetime WarrantyOTC s specially designed wheel bearing locknut sockets make wheel bearing locknuts easy to remove or install. OTC wheel bearing locknut sockets are formed from high-strength steel that is resistant to rounding out under high torque loads. Designed for use with 3/4 inch square-drive MANUAL tools only. NOT intended for use with impact tools - use with impact tools will void the socket s warranty. 6 point 3-1/4 inch (flat to flat) opening size. Measure locknut from flat to flat to determine socket size needed. 5 inches deep to ensure spindle clearance. 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.