Step 4: Turn the lug nut wrench counterclockwise. This will loosen the wheel lock and may require significant force to loosen the wheel lock from the wheel. This wheel lock set features a set of twenty locking keys for the removal of locking wheel nuts on Audi vehicles.The adapter can be used with either a 1/2" square drive or 21mm socket.It includes drift to aid removal of key from adapter.
eBay