The OTC 6612 is a 54mm hex socket designed for use on front wheel adjustment nuts found on Toyota FJ, LN and RN models. This is not a lightweight core socket, it has a 1/2" square drive and can be used with an extension and torque wrench for precise tightening. For use on rounded and standard hex nuts of the most popular light trucks on the road. Unlike the competition, this plug is backed by the famous OTC Lifetime Marathon guarantee against defects in materials and workmanship.