The SPX OTC1905 is a 2-9/16 Lock Nut Wrench Socket. The SPX OTC1905 8 point socket has a 3/4 square drive opening, permitting the use of an extension and torque wrench to tighten locknut as required. Locknut removal and installation is simple, even when wide-rim wheels are involved, since a long extension may be attached to the socket to provide the necessary clearance. Socket is made of high-strength steel.