Features and Benefits: 3-3/4 8-point locknut socket Wheel bearing locknuts are easy to remove or install with these specially designed sockets Sockets are made of high-strength steel; openings resist rounding out Can be used with an extension and torque wrench to tighten the locknut as required A long extension may be attached to the socket to provide the necessary clearance. Not Included Related Product: OTC1925 is part of OTC9851 8-pt Wheel Bearing Locknut Sockets with Tool Board Made in the USA Lifetime Warranty OTC 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. 8 point 3-3/4 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.