A 14mm allen socket in a local store. I can order one, but I hate waiting. I've been everywhere. Sears, all the local auto parts stores except Autozone because I didn't feel like driving there...I will tomorrow, even the Snap on truck didn't have it on the truck and they wanted 18 bucks for it with a week wait. What the hell. I can't even take the spindle and hub off now. I'm gonna be pissed if I have to order this thing. I think I'll go to a few german auto specialists to borrow theirs if I can't find one. But UPS came, I think my control arms and tie rods are here...Something to look up too.