Like most of the Crossfire, the tool kit is a carry over item from the SLK320. It is officially listed in online Chrysler parts sites and shown as #24 in the screen capture image below. It's not necessary or important for a Crossfire owner to have. I personally have found the included wheel stud guide is very helpful in mounting wheels. Many may not realize the small white tool is for removing small and large fuses. As I collect Crossfires , and most everything Crossfire related, and "tools", I didn't hesitate at the $28 purchase price at the time, and would most likely have paid the new price. As I feed my Crossfire habit I just tell myself I can work another month before retiring.