This is all you need to open the majority of case backs, but not Rolex. This is a very simple crude device that I carry with me whenever I go to a watch show, it is not bulky and I get a look inside the watch. I am showing mine with paint missing after 5 years use and still working not a glamorous photo but, no glamour prices this is a worker not to show off - priced at 9.95 + shipping please refer to item 2PT-CASE-OP when ordering. If you have any questions please send an email. On EVERY page every photo will ENLARGE click on it! EMAIL TO: Info@Westcoastime.com