Mercury 1996 Sable Manual page 258

The anti-theft lug nut and key
Removing the anti-theft lug nut
Insert the key over the locking lug nut. Make
sure that you hold the key square to the lug nut.
If you hold the key on an angle, you may
damage the key and the lug nut.
Place the lug nut wrench over the lug nut key
and apply pressure on the key with the wrench.
Turn the wrench in a counterclockwise direction
to remove the lug nut.
Replacing the anti-theft lug nut
Insert the key over the locking lug nut. Place the
lug nut wrench over the lug nut key and, while
applying pressure on the key, install the lug nut.
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