My new to me roadster did not come with one. I confirmed each 10mm boxend wrench that I have worked OK for opening the decklid and lifting the top. It did not have to be especially thin to work though the slot makes it look like it does. I had a longer and thinner than average SnapOn 10mm that does work better so I will store that in the cab along with a right-sized screwdriver. Thanks for the YouTube video. I used that and could not find a position that required a special offset for the wrench. Every position worked fine.