Yes, I was refering to the oil wrench.
Here's the link (it is good starting point, but a lot of the stuff is cheaper other places):
http://www.eagleday.com/specialtools.html
They have the wrench, the center cap remover (but like I said you can make one with a coat hanger) and the radio keys are another tool if you ever plan on removing your radio from the car.
Cheers!
