I think what you will find lou, excuse me if im wrong as i cannt see to good on that pic, them little "marks" in the corner of the locking wheel nut are loaction pin slots, which are unique to each locking nut, to stop people nicken em obviously. If you try to use a normal socket on that nut, i would guess it would just spin as the corners are rounded due to the slots (like a worn nut) |