Features and Benefits: 2-9/16" 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; To determine the correct size of locknut, measure from flat to flat. ; Opening size (8 pt.) 2-9/16".