This socket is for removing the slotted nut on the upper balljoint for all SY's (Shadows and derivatives) and SZ's (Spirit/Spurs, Turbo R, Mulsanne, Continental, Eight) from 1965 to 2003.  This socket does not fit Arnage/Seraph cars.

The socket is made from billet Chromoly.  If you are servicing or replacing your upper ball joints, this is the socket you need.