That would be a socket for anti theft lug nuts. Check the lug nuts and you may find a funny looking one on each wheel. This socket should match it.
I tend to get rid of the "theft proof" lug nuts. They can cause more problems than what they are worth. Besides, the determined wheel theif has the tools to cercumvent this.
The 80's GM sedans had this same type of tool for their hubcaps as well.
I wear a helmet in public! Yeah!
TopDeadCenter screwed with this post 04-18-2013 at 06:41 AM